Exercise 1

1.       I wish I ______ to retake my exams.    a. do not have  b. will not have      c. am about     d. did not have

2.       The spacemen felt as if he ______ in a paradise.         a. had been  b. falls c. fall   d. has fallen

3.       He afflicted mother felt as though she ______ on the verge of dying  a. has been      b. had been      c. were d. was

4.       I wish another more effective teaching method______ used.  a. is  b. was  c. were d. has been

5.       She wishes she ______ a  fairy now.    a. was  b. were c. is      d. were

6.       She spent money as if she always______ plenty of it. a. have b. had  c. had had        d. should have

7.       She spends money as if she always______ plenty of it.          a. has  b. have c. has had        d. had

8.       She talks too much but I wish she______        a. didn't           b. doesn't   c. won't           d. wouldn't

9.       They will drink wine but I wish they______   a. didn't           b. don't      c. won't           d. wouldn't

10.     She made lot of mistakes but I wish she______          a. didn't  b. hadn't          c. wouldn't      d. did

11.     My wife wishes she______ the guitar now      a. could play   b. can play       c. could have played   d. plays

12.     Yesterday he missed the lesson. He wishes he___ it.  a. didn't miss  b. hadn't miss  c. hasn't missed           d. hadn't missed

13.     I suggest that the doctor_____ up his mind without delay.a. makes  b. make           c. made           d. is to make

14.     This poor old man wishes he_____      a. wasn't born              b. has never been born

          c. had never been born  d. would never be born

15.     I am not a teacher of English, but suppose I _____, then I _____ ser up language centre.

          a. am/ can          b. were/ can     c. was could    d. were/could

16.     His friends suggest that the _____ for that post.          a. applies  b. apply           c. applying      d. will apply

17.     It's high time we____ these mice.a. are getting rid of  b. are going to get rid of       c. get rid of      d. got rid of

18.     It is necessary that children_____ of their old parents.a. to take care  b. takes care    c. took care     d. take are

19.     I wish this English course_____ the whole year.         a. will last  b. may last       c. lasted           d. last

20.     It is essential that the sponsor_____ the file early.      a. make  b. makes          c. made           d. making

. Cho đường tròn tâm O . 2 dây AB,CD bằng nhau. Dây AB và CD cắt nhau tại E nằm ngoài đường tròn. Gọi A,K lần lượt là trung điểm của AB,CD 
CMR: EH=EK=EA=EC

1.a.Cho a+b=c. Tìm Mim A sao cho A=a^2+b^2
b. Cho x+2y = 8 tìm max B sao cho B= x.y
 

Question 26: Since Tom______, I have heard nothing from him.
A. had left B. left C. has left D. was left
Question 27: After I______lunch, I looked for my bag.
A. had B. had had C. will have had D. have had
Question 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
Question 29: These were the highest words of praise they______from the old man.
A. ever heard B. have ever had C. had ever had D. will have ever heard
Question 30: He will take the dog out for a walk as soon as he______dinner.
A. finish B. finishes C. will finish D. finishing
Question 31: She______the children to her, and______the words she______to the others.
A. drew/said/had said B. was drawing/said/said C. had drawn/had said/said D. draws/is saying/has said
Question 32: He fell down when he______towards the church.
A. run B. runs C. was running D. had run
Question 33: Within a week she knew the fearful mistake she______.
A. made B. has made C. had made D. was making
Question 34: They______table tennis when their father comes back home.
A. will play B. will be playing C. play D. would play
Question 35: Before she went to bed, she______her homework already.
A. finished B. is finishing C. had finished D. was finishing
Question 36: They are staying at the hotel in London.At this time tomorrow, they ______in Vietnam.
A. will have travelled B. will travel C. will be travelling D. will be travelled Question 37: There______something vaguely familiar about her face but I couldn't remember where I______her before.
A. is/have met B. was/had met C. will see/meet D. was/met
Question 38: Another million people______unemployed by the time next year.
A. will have become B. will become C. will be become D. will be becoming Question 39: She told me that her family______long in that town.
A. has lived B. had lived C. lived D. was living
Question 40: By the time he______out of jail, he will have forgotten how to function in the real world.
A. got B. will get C. gets D. is getting
Question 41:______I have been saving money because I____________ buy a computer
A. shall B. will C. am going to D. would
Question 42:______By 8 o’clock yesterday, the spaceship______20 hours around the earth
A. will travel B. has been traveling C. had been traveling D. will have been traveling
Question 43: Over 20 years______but I never forgot the time we first met each other.
A. went B. have gone up C. has gone by D. has gone out
Question 44: The child kept the present that she______.
A. has been given B. had been given C. had given D. has given
Question 45: That pipe______for ages-we must get it mended.
A. has been leaking B. has been leaked C. had been leaked D. had been leaking
Question 46: I used my calculator; otherwise it______longer

A. will take B. would take C. took D. would have taken
Question 47: How many musical notes of the 11,000 tones that the human ear can distinguish______in the musical scale?
A. is it B. it is C. are there D. there are
Question 48: You______to our conversation. It was private.
A. haven’t been listening B. shouldn’t have been listening C. couldn’t have been listening D. hadn’t been listening
Question 49: The President______a speech, but in the end he______his mind.
A. would deliver - had changed B. was going to deliver - changed C. delivered - had changed D. was delivering - changed
Question 50: The Angkor complex______the entire range of Khmer art from the 9th to the 14th century.
A. represented B. represents C. represent D. was represented

Question 1: The manager______the store before I arrived.
A. closed B. had closed C. has closed D. was closed
Question 2: When we see Mr. Minh tomorrow, I______him of that.
A. will remind B. remind C. have reminded D. reminded
Question 3: When I got home I found that water______down the kitchen walls.
A. ran B. was running C. has run D. had been running
Question 4: After he______his English course, he went to England to continue his study.
A. has finish B. had finished C. was finished D. would finish
Question 5: While my father______a film on TV, my mother was cooking dinner.
A. watched B. was watching C. had watched D. watches
Question 6: I don't think he______in the thirty years I______him.
A. had changed/have known B. has changed/have known C. had changed/had known D. has changed/knew
Question 7: When I came to visit her last night, she______a bath.
A. is having B. was having C. has had D. had had
Question 8: Tom______before we arrive there.
A. has left B. had left C. will have left D. leaves
Question 9: He______his Chinese course before he went to China to continue his business.
A. will finish B. has finished C. had finished D. will have finished
Question 10: Please send us a postcard as soon as you______in London.
A. will arrive B. is going to arrive C. arrive D. arrived
Question 11: I______you this book when I meet you tomorrow.
A. give B. will give C. is giving D. has given
Question 12: We______for going home when it began to rain.
A. were preparing B. are preparing C. will be preparing D. have prepared Question 13: John______in the same house since he left school.
A. lived B. had lived C. was living D. has lived
Question 14: I had prepared dinner before I______to work.
A. went B. was going C. had gone D. is going
Question 15: When she came into the hall, she______her arms to the audience, smiled and bowed deeply.
A. opened B. had opened C. was opening D. is opening
Question 16: I have never played badminton before. This is the first time I______to play it. A. try B. tried C. have tried D. am trying
Question 17: The car______ready for him by the time he comes tomorrow.
A. will be B. will have been C. will being D. are going to be
Question 18: He greeted her. She really______better than when he______her last. Yes, she______.
A. looked/saw/had changed B. looked/saw/changed C. looked/had seen/had changed D. had looked/had seen/had changed
Question 19: When I last saw him, he______in London.
A. has lived B. is living C. was living D. has been living
Question 20: I sat down at the desk and______why my father's letter______yet. I______to ask him to send me some money at once
 A. wonder/hasn’t arrive/wrote B. wondered/hadn’t arrived/wrote C. wondered/hasn’t arrived/wrote D. wondered/hadn’t arrived/had written
Question 21: 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
Question 22: I will come and see you before I______for the States.
A. leave B. will leave C. have left D. shall leave
Question 23: By the age of 25, he______two famous novels.
A. wrote B. writes C. has written D. had written
Question 24: When her husband was in the army, Mary______to him twice a week
A. was writing B. wrote C. was written D. had written
Question 25: I have never played football before. This is the first time I______to play
. A. try B. tried C. have tried D. am trying 

Question 20:It is the first time he______(drive) a car.
Question 21:I understand you ______(have) an unpleasant experience at the weekend. What exactly______(happen)?
Question 22:"Good night. It______(be) nice to meet you," he______(say) and ______(go) off to his car.
Question 23:I will graduate in June. I will see you in July. By the time I______(see) you, I______(graduate).
Question 24:We______(already finish) that work by the time you get back.
Question 25:When I arrived at the meeting, the first speaker just______(finish) speaking and the audience were clapping.
Question 26:The traffic was very heavy. By the time I______(get) to Mary's party, everyone______(already arrive).
Question 27:"You______(find) the key which you______(lose) yesterday?" "Yes. I______(find) it in the pocket of my other coat."
Question 28:Tomorrow I'm going to leave for home. When I______(arrive) at the airport, Mary______(wait) for me.
Question 29:Sarah has lost passport again. It is the second time this______(happen).
Question 30:When the alarm rang, Jack______(jump) out of bed quickly.
Question 31:It's no use getting impatient. The plane______(not arrive) until the weather______(clear) up.
Question 32:John and I______(study) at the same school and we______(be) great friends ever since.
Question 33:Don't wait up for me. I can't tell when I______(be) back.
Question 34:Here you are! What you______(do) here at this time of night? Question 35:Good-bye, Ned. I never______(forget) you. I______(miss) you more than anyone I ever______(know) in my life.
Question 36:The secretary______ (type) all the documents long before the manager comes.
Question 37:You see, I______(do) this kind of thing for the last 30 years.
Question 38:When we______(get) to the restaurant, we______(find) that nobody ______ (remember) to reserve a table.
Question 39:I could tell at a glance that the pile of letters on my desk______(disturb) while I______(be) out.
Question 40:As soon as she arrived England, she______(find) that the language ______(be) quite different from the English that she______(learn) at school.

Question 1:When I______(see) you tomorrow, I______(tell) you my news.
Question 2:By the end of the month the estate agent______(sell) twenty houses.
Question 3:When I______(wait) for the bus, I saw my close friend.
Question 4:______She______(study) English since she______(be) four years old.
Question 5:______We______(study) while they are going out.
Question 6:As soon as we______(get) there, we______(phone) for a taxi.
Question 7:______He______(see) 10 mice when he______(come) into the room.
Question 8:We went home when we______(finish) our work.
Question 9:When I was going to the door, the phone______(ring).
Question 10:I will go to the library before I______(do) the shopping.
Question 11:At this time last night, I______(learn) while my father______ (watch) TV
Question 12:He______(watch) TV when I come to see him.
Question 13:He______(live) in New York for 4 years before he______(move) to New York.
Question 14:We______(send) a report as soon as we______(finish) our work.
Question 15:We______(wait) here until the rain______(stop).
Question 16:He will go home as soon as he______(finish) his work.
Question 17:At 11:30 tomorrow, we______(have) lunch in our friend’s house.
Question 18:His health has improved since he______(return) from the hills.
Question 19:The Chinese______(make) spaghetti dishes for a long time before Marco Polo______(bring) it back to Italy.

Question 20:It is the first time he______(drive) a car.
Question 21:I understand you ______(have) an unpleasant experience at the weekend. What exactly______(happen)?
Question 22:"Good night. It______(be) nice to meet you," he______(say) and ______(go) off to his car.
Question 23:I will graduate in June. I will see you in July. By the time I______(see) you, I______(graduate).
Question 24:We______(already finish) that work by the time you get back.
Question 25:When I arrived at the meeting, the first speaker just______(finish) speaking and the audience were clapping.
Question 26:The traffic was very heavy. By the time I______(get) to Mary's party, everyone______(already arrive).
Question 27:"You______(find) the key which you______(lose) yesterday?" "Yes. I______(find) it in the pocket of my other coat."
Question 28:Tomorrow I'm going to leave for home. When I______(arrive) at the airport, Mary______(wait) for me.
Question 29:Sarah has lost passport again. It is the second time this______(happen).
Question 30:When the alarm rang, Jack______(jump) out of bed quickly.
Question 31:It's no use getting impatient. The plane______(not arrive) until the weather______(clear) up.
Question 32:John and I______(study) at the same school and we______(be) great friends ever since.
Question 33:Don't wait up for me. I can't tell when I______(be) back.
Question 34:Here you are! What you______(do) here at this time of night? Question 35:Good-bye, Ned. I never______(forget) you. I______(miss) you more than anyone I ever______(know) in my life.
Question 36:The secretary______ (type) all the documents long before the manager comes.
Question 37:You see, I______(do) this kind of thing for the last 30 years.
Question 38:When we______(get) to the restaurant, we______(find) that nobody ______ (remember) to reserve a table.
Question 39:I could tell at a glance that the pile of letters on my desk______(disturb) while I______(be) out.
Question 40:As soon as she arrived England, she______(find) that the language ______(be) quite different from the English that she______(learn) at school.

Ét Ô Ét!!! Giúp em với ạ đừng giait htl ngược ạ!!!
cho tam giác DEF vuông tại E, đg cao EH.
a.viết tất cả các hệ thức lượng
b.Cho DE=5cm,EF=7cm. Tính DH,FH,EHDE = 5cm, EF= 7 cm. tính DH, FH, EH

Question 1 : - There is a movie on TV tonight. You_____(watch) it?

    - No, I_____(write) some letters.

Question 2 : Look at those black clouds! It_____(rain).

Question 3 : We_____(take) a trip to HCM city this weekend.

Question 4 : My father_____(play) tennis in 15 minutes because he has just worn sport clothes.

Question 5 : - Can you tell me about our school plan tomorrow?

    - We_____(visit) the museum in the morning.

Question 6 : She_____(buy) a new house next month because she has had enough money.

Question 7 : - You don’t seem to enjoy your piano lessons.

- I don’t. I_____(quit) soon.

Question 8 : I_____(visit) my parents at the weekend. I have already bought a train ticket.

Question 9 : The man can’t see the hole in front of him. He_____(fall) into the hole.

Question 10 : - I hear you have been offered a job.

- That right, but I_____(not take) it.

Question 11 : I feel terrible. I think I_____(be) sick.

Question 12 : - Ann is in hospital. 

    - Yes, I know. I_____(visit) her tonight.

Question 13 : There is a hole in the bottom of the boat. A lot of water is coming in through the hole. The boat_____(sink).

Question 14 : Sue and I have decided to have a party. We_____(invite) a lot of people.

Question 15 : Erica is driving. There is very little gas left in the tank. The nearest gas station is far away. She_____(run out) of gas.