Choose the best answer among A, B, C, or D.

1. When I last saw him, he in London.

A. has lived B. is living C. was living D. has been living

2. We Dorothy since last Saturday.

A. don’t see B. haven’t seen C. didn’t see D. hadn’t seen

3. The train half an hour ago.

A. has been leaving B. left C. has left D. had left

4. Jack the door.

A. has just painted B. paint C. will have painted D. painting

5. My sister for you since yesterday.

A. is looking B. was looking C. has been looking D. looked

6. I Texas State University now.

A. am attending B. attend

C. was attending D. attended

7. He has been selling motorbikes .

A. ten years ago B. since ten years C. for ten years ago D. for ten years

8. Christopher Columbus American more than 500 years ago.

A. discovered B. has discovered C. had discovered D. had been discovering

9. He fell down when he towards the church.

A. run B. runs C. was running D. had run

10. We there when our father died.

A. still lived B. lived still C. was still lived D. was still living

11. They table tennis when their father comes back home.

A. will play B. will be playing C. play D. would play

12. By Christmas, I for Mr. Smith for six years.

A. will have been working B. will work C. have been working D. will be working

13. I in the room right now.

A. am being B. was being C. have been being D. am

14. I to New York three times this year.

A. have been B. was C. were D. had been

15. I’ll come and see you before I for the States.

A. leave B. will leave C. have left D. shall leave

16. The little girl asked what to her friend.

A. has happened B. happened

C. had happened D. would have been happened

17. John a book when I saw him.

A. is reading B. read C. was reading D. reading

18. He said he _ return later.

A. will B. would C. can D. would be

19. Jack the door.

A. has just opened B. open

C. have opened D. opening

20. I have been waiting for you .

A. since early morning B. since 9 a.m

C. for two hours D. All are correct

21. Almost everyone for home by the time we arrived.

A. leave B. left C. leaves D. had left

22. By the age of 25, he two famous novels.

A. wrote B. writes C. has written D. had written

23. When her husband was in the army, Mary to him twice a week.

A. was reading B. wrote C. was written D. had written

24. I couldn’t cut the grass because the lawn mower a few days previously.

A. broke down B. has been broken

C. had broken down D. breaks down

25. I have never played badminton before. This is the first time I to play.

A. try B. tried C. have tried D. am trying

26. Since , I have heard nothing from him.

A. he had left B. he left C. he has left D. he was left

27. After I lunch, I looked for my bag.

A. had B. had had C. have has D. have had

28. By the end of next year, George English for two years.

A. will have learned B. will learn

C. has learned D. would learn

29. The man got out of the car, round to the back and opened the book.

A. walking B. walked C. walks D. walk

30. Henry into the restaurant when the writer was having dinner.

A. was going B. went C. has gone D. did go

31. He will take the dog out for a walk as soon as he dinner.

A. finish B. finishes C. will finish D. finishing

32. I will be glad if he with us.

A. had gone B. did go C. went D. goes

33 Ask her to come and see me when she her work.

A. finish B. has finished C. finished D. finishing

34. Turn off the gas. Don’t you see that the kettle ?

A. boil B. boils C. is boiling D. boiled

35. Tom and Mary for Vietnam tomorrow.

A. leave B. are leaving C. leaving D. are left

36. He always for a walk in the evening.

A. go B. is going C. goes D. going

37. Her brother in Canada at present.

A. working B. works C. is working D. work

38. I to the same barber since last year.

A. am going B. have been going C. go D. had gone

39. Her father when she was a small girl.

A. dies B. died C. has died D. had died

40. Last week, my professor promised that he today.

A. would come B. will come C. comes D. coming

9. Before my father established his trading company in 2000, he __________ for many international enterprises.

A. worked

B. was working

C. had worked

D. has worked

10. Our distant cousin dropped in out apartment when we __________ a Christmas party.

A. have

B. had

C. was having

D. were having

11. The ground is wet. It __________ for two hours.

A. has rained

B. has been raining

C. had rained

D. rained

12. When I was studying medicine at university, I __________ to establish my own business.

A. decided

B. was decided

C. was deciding

D. decide

13. I __________ a Halloween party on Sunday, so I would like to invite all of you to come and enjoy with me.

A. am hosting

B. will host

C. am going to host

D. host

14. She telephoned while I __________ a picture.

A. was drawing

B. drew

C. have drawn

D. am drawing

15. If you had listened to my advice yesterday, you __________ in this mess right now.

A. wouldn’t be

B. would have been

C. were

D. hadn’t been

1. I’m told you are ill. I hope you ________ better again.

a. will feel

b. feel

c. are feeling

d. don’t feel

2. ______ you ______ to school every morning?

a. Does ... walk

b. Do ... walk

c. Will... walk

d. Are ... walking

3. You needn’t wear your coat. It ________ cold today.

a. will be

b. won’t be

c. doesn’t be

d. is

4. Fire needs oxygen to burn. It ________ without oxygen.

a. burns

b. burn

c. don’t burn

d. doesn’t burn

5. We ________ swimming because it’s fun and good exercise.

a. like

b. are liking

c. will like

d. liked

Choose the correct sentence among A, B, C or D which has the same meaning as the given one.

1. Eight years ago we started writing to each other. A. We have rarely written to each other for eight years. B. Eight years is a long time for us to write to each other. C. We wrote to each other eight years ago. D. We have been writing to each other for eight years.

2. My father hasn’t smoked cigarettes for a month.

A. It’s a month since my father last smoked cigarettes.

B. It’s a month ago that my father smoked cigarettes. C. It’s a month that my father hasn’t smoked cigarettes.

D. It’s a cigarette that my father smoked a month ago.

3. Mr. Brown bought this car five years ago.

A. Mr. Brown started to buy this car for five years.

B. It has been five years when Mr. Brown has bought this car.

C. Mr. Brown has had this car for five years .

D. It is five years ago since Mr. Brown has bought this car.

4. I haven’t enjoyed myself so much for years.

A. It’s years since I enjoyed myself so much.

B. It’s years since I have enjoyed myself so much.

C. It was years since I had enjoyed myself so much.

D. It has been years since I have enjoyed myself so much.

5. I came to live here three months ago. A. It was three months since I lived here. B. I’ve been living here for three months. C. I lived here for three months. D. I didn’t live here for three months.

6. We started working here three years ago. A. We worked here for three years. B. We have no longer worked here for three years. C. We have worked here for three years. D. We will work here in three years.

7. It’s a long time since we last went to the cinema. A. We have been to the cinema for a long time. B. We haven’t been to the cinema for a long time. C. We don’t go to the cinema as we used to. D. We wish we went to the cinema now. 8. I haven’t finished this book yet. A. I’m still reading this book. B. I have read this book before. C. The book I’m reading hasn’t finished. D. I will read this book some day.

9. He last had his eyes tested ten months ago. A. He hasn’t had his eyes tested for ten months. B. He had not tested his eyes for ten months then.

C. He had tested his eyes ten months before. D. He didn’t have any test on his eyes in ten months.

10. I haven’t been here before. A. Being here is a pleasant experience. B. This is the first time I have been here . C. I have wished to be here for long. D. Before long I will be here.

11. The last time I saw Rose was three years ago. A. I hasn’t seen Rose for three years. B. I haven’t seen Rose three years ago. C. I haven’t seen Rose since three years. D. I haven’t seen Rose for three years.

Tìm lỗi sai ở một trong những từ in đậm:

1. After Mrs. Wang had returned to her house from work, she was cooking dinner.

2. Jimmy threw the ball high in the air, and Betty catching it when it came down.

3. Linda has worn her new yellow dress only once since she buys it.

4. Last week Mark told me that he got very bored with his present job and is looking for a new one.

5. Having fed the dog, he was sat down to his own meal.

6. When I turned on my computer, I was shocked to find some junk mail, and I delete it all.

7. They are going to have to leave soon and so do we.

8. The boss laughed when the secretary has told him that she really needed a pay rise.

9. The telephone rang several times and then stop before I could answer it.

10. Debbie, whose father is an excellent tennis player, has been playing tennis since ten years.

11. I have seen lots of interesting places when I went on holiday last summer.

12. When my cat heard a noise in the bushes, she stopped moving and listen intently.

13. I think it’s time you change your way of living.

14. Roger felt the outside of his pocket to make sure his wallet is still there.

15. When I’m shopping in the supermarket, I ran into an old friend who I hadn’t met for five years.

16. The police arrested the man while he is having dinner in a restaurant.

17. Peter and Wendy first met in 2006, and they are married for three years now.

18. Some people are believing there is life on other planets.

19. Recently, the island of Hawaii had been the subject of intensive research on the occurrence of earthquakes.

20. Every morning, the sun shines in my bedroom window and waking me up.

21. The man died as a result of falling asleep while he drives.

22. I haven’t finished the report yet, but by the time you return I will certainly complete it.

23. Caroline has worn her new yellow dress only once since she buys it.

24. We’ll be cycled to Hoa’s village at this time next Sunday.

25. What will you do when your friends won’t come?

26. Someone was knocking at the door when I was doing the washing up.

27. My friend didn’t drink any beer since we came to live here.

28. We have written to each other when we were in primary school.

29. After breakfast, I‘m gone to walk to school with my friends.

30. Did he go to the pop concert next weekend for a change?

1. The children _____ football at the moment

A. is playing

B. are playing

C. plays

2. The dog _____ sleeping on the floor

A. are

B. is

C. am

3. ______ your brother walk to school every day?

A. Does

B. Do

C. Is

4. We ____ dinner now

A. are eating

B. eat

C. eats

5. The teacher _____ writing on the board

A. are

B. aren’t

C. is

6. We ____ for our test at the moment

A. work

B. works

C. are working

7. Do you ____ comedy films?

A. like

B. liking

C. likes

8. He ____ with his friends on Sundays

A. is going out

B. goes out

C. go out

9. Are they _____ to the police officer now?

A. speak

B. speaking

C. speaks

10. Luck can’t talk to you now. He _____ a bath

A. having

B. has

C. is having

1. James is ______ judo in the playground with his friends and he is very excited.

A. studying

B. doing

C. playing

D. have

2. Keep quiet! Jessica ______ a headache so she is sleeping in her bedroom.

A. does

B. plays

C. studying

D. has

3. My father is ______ a cup of coffee with his colleague in the living room now.

A. plays

B. study

C. doing

D. having

4. Williams always ______ breakfast with bread, egg and milk before coming to school.

A. has

B. plays

C. studies

D. does

5. Tiffany and Rosy usually help their mom ______ the chores at the weekend.

A. study

B. do

C. playing

D. have

6. Frank is ______ Maths at the moment to prepare for the final exam.

A. studying

B. doing

C. playing

D. has

7. My brother doesn’t ______ badminton in the evening

A. play

D. do

C. have

D. study

1. I _______ a new dress yesterday.

A. buy

B. bought

C. have bought

2. They _____ their homework yet

A. have finished

B. haven’t finished

C. finished

3. I ________ TV last night.

A. didn’t watch

B. haven’t watched

C. hasn’t watched

4. She ____ married in 2018

A. have got

B. has got

C. got

5. He ______ to school last week. He was ill

A. hasn’t gone

B. went

C. didn’t go

6. We ____ the children’s toys yesterday.

A. found

B. find

C. have found

7. Helen has already ____ lunch.

A. have

B. has

C. had

8. I didn’t ______ breakfast yesterday.

A. have

B. had

C. has

9. Ben has just _____ a vase

A. break

B. broke

C. broken

1. My grandmother _______ me a present yesterday.

A. buys

B. bought

C. doesn’t buy

2. Peter _______ basketball yesterday.

A. doesn’t play

B. didn’t play

C. plays

3. Tony always _______ his cousins on Fridays

A. visited

B. didn’t visit

C. visits

4. I _____ my bike in the park every weekend.

A. ride

B. didn’t ride

C. am riding

5. _____ they _____ to the beach last Saturday?

A. Did, goes

B. Do, go

C. Did, go

6. Who ______ penicillin?

A. discovers

B. discovering

C. discovered

7. I usually ______ a bowl of cereal for breakfast.

A. eat

B. eats

C. eating

8. Mum ______ very happy today.

A. was

B. is

C. are

1. Winter __________ the coolest season in a year.

A. is

B. was

C. has been

D. will be

2. Now we __________ them singing in chorus in the church.

A. are hearing

B. heard

C. hear

D. have been hearing

3. I __________ him about this matter many times but he often ignores.

A. tell

B. told

C. have told

D. had told

4. Yesterday at this time, I __________ dinner with my family

A. had

B. was having

C. were having

D. have

5. She often __________ to work but today she __________ a train.

A. drives/ took

B. drives/ is taking

C. drove/ is taking

D. drove/ takes

6. Columbus __________ America more than 500 years ago.

A. discovered

B. had discovered

C. discovers

D. has discovered

7. She __________ for the train for two hours but it has not come yet.

A. has waited

B. is waiting

C. waited

D. has been waiting

8. She __________ an overwhelming desire to tell someone about what had happened.

A. was feeling

B. feels

C. has felt

D. felt

9. Before my father established his trading company in 2000, he __________ for many international enterprises.

A. worked

B. was working

C. had worked

D. has worked

10. Our distant cousin dropped in out apartment when we __________ a Christmas party.

A. have

B. had

C. was having

D. were having

11. The ground is wet. It __________ for two hours.

A. has rained

B. has been raining

C. had rained

D. rained

12. When I was studying medicine at university, I __________ to establish my own business.

A. decided

B. was decided

C. was deciding

D. decide

13. I __________ a Halloween party on Sunday, so I would like to invite all of you to come and enjoy with me.

A. am hosting

B. will host

C. am going to host

D. host

14. She telephoned while I __________ a picture.

A. was drawing

B. drew

C. have drawn

D. am drawing

15. If you had listened to my advice yesterday, you __________ in this mess right now.

A. wouldn’t be

B. would have been

C. were

D. hadn’t been

1. I’m told you are ill. I hope you ________ better again.

a. will feel

b. feel

c. are feeling

d. don’t feel

2. ______ you ______ to school every morning?

a. Does ... walk

b. Do ... walk

c. Will... walk

d. Are ... walking

3. You needn’t wear your coat. It ________ cold today.

a. will be

b. won’t be

c. doesn’t be

d. is

4. Fire needs oxygen to burn. It ________ without oxygen.

a. burns

b. burn

c. don’t burn

d. doesn’t burn

5. We ________ swimming because it’s fun and good exercise.

a. like

b. are liking

c. will like

d. liked EXERCISE 2: Choose the best answer among A, B, C, or D.

1. When I last saw him, he in London.

A. has lived B. is living C. was living D. has been living

2. We Dorothy since last Saturday.

A. don’t see B. haven’t seen C. didn’t see D. hadn’t seen

3. The train half an hour ago.

A. has been leaving B. left C. has left D. had left

4. Jack the door.

A. has just painted B. paint C. will have painted D. painting

5. My sister for you since yesterday.

A. is looking B. was looking C. has been looking D. looked

6. I Texas State University now.

A. am attending B. attend

C. was attending D. attended

7. He has been selling motorbikes .

A. ten years ago B. since ten years C. for ten years ago D. for ten years

8. Christopher Columbus American more than 500 years ago.

A. discovered B. has discovered C. had discovered D. had been discovering

9. He fell down when he towards the church.

A. run B. runs C. was running D. had run

10. We there when our father died.

A. still lived B. lived still C. was still lived D. was still living

11. They table tennis when their father comes back home.

A. will play B. will be playing C. play D. would play

12. By Christmas, I for Mr. Smith for six years.

A. will have been working B. will work C. have been working D. will be working

13. I in the room right now.

A. am being B. was being C. have been being D. am

14. I to New York three times this year.

A. have been B. was C. were D. had been

15. I’ll come and see you before I for the States.

A. leave B. will leave C. have left D. shall leave

16. The little girl asked what to her friend.

A. has happened B. happened

C. had happened D. would have been happened

17. John a book when I saw him.

A. is reading B. read C. was reading D. reading

18. He said he _ return later.

A. will B. would C. can D. would be

19. Jack the door.

A. has just opened B. open

C. have opened D. opening

20. I have been waiting for you .

A. since early morning B. since 9 a.m

C. for two hours D. All are correct

21. Almost everyone for home by the time we arrived.

A. leave B. left C. leaves D. had left

22. By the age of 25, he two famous novels.

A. wrote B. writes C. has written D. had written

23. When her husband was in the army, Mary to him twice a week.

A. was reading B. wrote C. was written D. had written

24. I couldn’t cut the grass because the lawn mower a few days previously.

A. broke down B. has been broken

C. had broken down D. breaks down

25. I have never played badminton before. This is the first time I to play.

A. try B. tried C. have tried D. am trying

26. Since , I have heard nothing from him.

A. he had left B. he left C. he has left D. he was left

27. After I lunch, I looked for my bag.

A. had B. had had C. have has D. have had

28. By the end of next year, George English for two years.

A. will have learned B. will learn

C. has learned D. would learn

29. The man got out of the car, round to the back and opened the book.

A. walking B. walked C. walks D. walk

30. Henry into the restaurant when the writer was having dinner.

A. was going B. went C. has gone D. did go

31. He will take the dog out for a walk as soon as he dinner.

A. finish B. finishes C. will finish D. finishing

32. I will be glad if he with us.

A. had gone B. did go C. went D. goes

33 Ask her to come and see me when she her work.

A. finish B. has finished C. finished D. finishing

34. Turn off the gas. Don’t you see that the kettle ?

A. boil B. boils C. is boiling D. boiled

35. Tom and Mary for Vietnam tomorrow.

A. leave B. are leaving C. leaving D. are left

36. He always for a walk in the evening.

A. go B. is going C. goes D. going

37. Her brother in Canada at present.

A. working B. works C. is working D. work

38. I to the same barber since last year.

A. am going B. have been going C. go D. had gone

39. Her father when she was a small girl.

A. dies B. died C. has died D. had died

40. Last week, my professor promised that he today.

A. would come B. will come C. comes D. coming

Tìm x, biết:

a, \(\sqrt{x-2\sqrt{x-1}}=\sqrt{x-1}-1\)

b, \(\sqrt{1-12x+36x^2}=5\)

c, \(\sqrt{x+2\sqrt{x-1}}=2\)