1. When I finish this course, I ___________ to the next level.
a. have gone b. will be c. went d. would go
2. When I ________ the novel I’ll lend it to you.
a. will finish b. will have finished c. have finished d. finished
3. By the end of the term, I ____________ all eight volumes.
a. will be reading b. read c. have read d. will have read
4. When we ___________ out, the chest cavity _______ smaller.
a. breathe/ became b. breathe/becomes
c. will breathe/ will become d. will breathe/ becomes
5. The committee _______ a report when it _________ all the available information.
a. will submit/has collected b. submits/collected
c. will submit/will collect d. will submit/ collected
6. The patient ________ after he ________ ill for a long time.
a. died/has been b. dies/ had been c. died/ had been d. will die/ will be
7. She __________ French since she _________ to Illinois.
a. had studied/came b. had studied/has come
c. has been studying/came d. studied/ came
8. Henry was packing the suitcases while his wife _______ the room.
a. was tidying b. tides c. has been tidying d. had tidied
9. Christine ________ as a nurse for seven years, then she became a teacher.
a. has worked b. has been working c. was working d. worked
10. Before we knew what was happening, the roof _________.
a. has fallen in b. will fall in c. had fallen in d. had been falling in
11. I want ________ at home tonight.
a. staying b. to stay c. stay d. stayed
12. Alice isn’t interested in ___________ for a new job.
a. look b. to look c. looks d. looking
13. We’re going out for dinner. Would you like ________ us?
a. joining b. to join c. join d. joins
14. When Beth got tired, she stopped _________.

2

a. working b. to work c. work d. works
15. Don’t forget ________ the letter I gave you yesterday.
a. post b. posting c. posts d. to post
16. Would you mind __________ the door? Thanks
a. opening b. open c. opens d. to open
17. The man wanted to avoid ____________ on security cameras.
a. to see b. seeing c. to be seen d. being seen
18. I tried __________ the bus, but I missed it.
a. to catch b. catching c. to be caught d. being caught
19. The plants want _________ daily.
a. to water b. watering c. to be watered d. both b and c
20. Will you remind me _________ this letter at the post office?
a. to post b. posing c. to be posted d. being posted
21. The goods ought _________ two weeks ago.
a. to deliver b. delivering c. to be delivered d. being delivered

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bạn chưa hiểu chỗ nào thế ?

1)  3.(-4)²+2.(-5)-20

  = 3.16+(-10)-20

  = 48+(-10)-20

  = 38-20

  = 18

2)   5.(-3)²-14.(-8)+(-40)

   = 5.9-(-112)+(-40)

   = 45-(-112)+(-40)

   = 157+(-40)

   = 117

3)    31-[26-(209+35)]

    = 31-[26-244]

    = 31-[-218]

    = 249

Tk mk nhé!Thank you very much!

2^x + 2^{x + 3} = 144

2^x . 1 + 2^x . 2³ = 144

2^x . (1 + 8) = 144

2^x . 9 = 144

2^x = 16 = 2⁴

=> x = 4

1. Unfortunately, Simon ______a day off very often.
A. doesn’t get B. isn’t getting C. hasn’t got D. hasn’t been getting
2. I ______for Christine. Do you know where she is?
A. look B. looked C. am looking D. looks
3. The man got out of the car, ______round to the back and opened the boot.
A. walking B. walked C. walks D. walk
4. They ________there when their father passed away.
A. still lived B. lived still C. was still living D. were still living
5. She ______very angry when she knows this.
A. shall be B. has been C. will have been D. will be
6. I’m going on holiday on Saturday. This time next week I ______on a beach in the sea.
A. will lie B. am lying C. will be lying D. should be lying
7. ______TV for the last four hours? Turn it off and get some exercises.
A. Do you watch B. Are you watching
C. Watched you D. Have you been watching
8. By the age of 25, he ______two famous novels.
A. wrote B. writes C. has written D. had written
9. By Christmas, I ______for you for 6 months.
A. shall have been working B. shall work
C. have been working D. shall be working
10. That’s the first time ______an answer right today.
A. I get B. I’m getting C. I have got D. I have been getting
11. By the end of December, John ________ as a reporter for ten years.
A. will have worked B. will have been working
C. will work D. will be working
12. At last the bus came. We ______for half an hour.
A. waited B. was waiting C. have waited D. had been waiting
13. When the first child was born, they ______married for three years.
A. have been married B. had been married
C. will been married D. will have been married
14. I’m sorry I ______to you for so long, but I’m very busy lately.
A. haven’t written B. am not writing C. don’t write D. didn’t write
15. I’m pretty sure that we ________the exam.
A. will pass B. haven’t passed C. have passed D. are going to pass
16. It's amazing how Jenny acts as though she and Darren ______serious problems at the
moment.
A. aren’t having B. weren’t having C. hadn’t had D. hadn’t been having

17. By the age of ten, Helen ______Braille as well as the manual alphabet and even learned to use

typewriter.
A. mastered B. has mastered C. had mastered D. was mastering
18. The teacher as well as his students ______at the school meeting yet.
A. arrived B. hasn’t arrived C. haven’t arrived D. not
19. Every evening since last Christmas, I ______my dog out of for a walk in the park.
A. take B. took C. have taken D. had taken
20. After John ______a rough outline of the model, he begins painting.
A. had drawn B. has drawn C. drew D. draw
21. I ______the bell three times when he answered the door.
A. would ring B. rang C. had rung D. was ringing
22. It is necessary that I ______here tomorrow.
A. would be B. were C. am being D. be
23. This time next month we won’t be at work; we ______the peaceful atmosphere of the
countryside.
A. will enjoy B. will have enjoyed C. are enjoying D. will be enjoying
24. A number of prisoners ______on the occasion of the Independence Day this year.
A. has been released B. have been released
C. were released D. was released
25. Ian ______a shower at the moment, so could you call back in about half an hour?
A. takes B. is taking C. has taken D. has been taking
26. He fell down when he ______towards the church.
A. run B. runs C. was running D. had run
27. After I ______lunch, I looked for my bag.
A. had B. had had C. have has D. have had
28. Henry ______into the restaurant when the writer was having dinner.
A. was going B. went C. has gone D. did go
29. He will take the dog out for a walk as soon as he ______dinner.
A. finish B. finishes C. will finish D. shall have finished
30. Almost everyone ______for home by the time we arrived.
A. leave B. left C. leaves D. had left

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