21. You should try your best _______ your parents can be proud of you

A. so that B. in order to C. in order that D. A and C

22.Did you enjoy the licnic?

- It was okay but I'd rather _______ to a movie

A. go B. be going C. have gone D. went

23.I don't think that red dress _______ her

A. suits B. matches C. fit D. agrees

24.The use of helmet is _______ in many states.Failture to wear them may result in fine.

A. compulsory B. important C. good D. optional

25.My brother _______ all the morning, and he was very tired

A. has been working B. had been working

C. worked D. working

26.Nobody likes her, _______?

A.does she B.do they C.don't they D.doesn't she

27.In the US _______ the states but hawaii is an iland

A.neither of B.None of C.no of D.all of

28.Jack is a good student _______ languages

A.of B.for C.in D.from

29.About two third of Vietnamese work _______ agriculture

A.a B.an C.the D. no article

30. Do you often watch _______ broadcast on TV ?

A. lively B. living C. alive D. live

31. He told me _______ the safe before he left.

A. to remember to lock B. remember locking

C. to remember locking D. remember to lock

32. _______ people use public transport, there will be less pollution.

A. Unless B. If C. Since D. A and C are correct

33. When the telephone rang, she _______ a letter.

A. was writting B. was written C. was writing D. wrote

34. I am looking forward to _______ from you.

A. hear B. heard C. be heard D. hearing

35. The World Cup _______ every four years.

A. is held B. has been C. is made D. is taken

36. The Blacks live in the house _______ the green doors.

A. have B. with C. which D. has

37. It’s very kind _______ you to help me with my homework.

A. for B. of C. to D. with

38. I sent a card to congratulate Nam _____ winning the first prize in the English speaking contest.

A. about B. for C. on D. of

39. _______ I had an umbrella, I got very wet in the rain.

A. In spite of B. Despite C. Even though D. As long as

40. The fire alarm _______ and we all rushed out.

A. went off B. turned out C. exploded D. A and C are correct.

41. Susan _______ her keys. She can’t find them anywhere.

A. loses B. has lost C. lost D. has been lost

42. I’m late, _______ ?

A. am I B. am not I C. aren’t I D. are I

43. This subject, _______ , is very important.

A. which we are going to discuss B. which is going to discuss

C. that we are going to discus D. A and C are correct

45. Hellen was looking after a dog _______ in an accident.

A. which leg had been broken B. whose leg had been broken

C. its leg had been broken D. that leg had been broken

46. You _______ more exercise if you ……….. to keep fit.

A. can make/ want B. ought to do/want

C. should take/ want D. might do/ want

47. Ann _______ going for a walk, but no one else wanted to.

A. admitted B. offered C. promised D. suggested

48. The police officer stopped me and asked me where _______.

A. were I going B. I were going C. was I going D. I was going

49. We are tired of living in a big city. We wish we _______ in a small village in the countryside.

A. live B. lived C. had lived D. had been living

50. After _______ by the police, the man admitted _______ the car.

A. being stopped/ stealing B. stopping/ stealing

C. being stopped/ to steal D. stopping/ being stolen

Choose the best option A, B, C or D to complete the sentence.

1. I shouldn’t ………. so much coffee last night. I was wide awake till four in the morning.

A. drink B. drank C. be drunk D. have drunk

2. The profits are supposed …………………. among the shareholders.

A. to divide B. to be divided C. dividing D. being divided

3. When you are on duty, your uniform must …………………. at all times.

A. wear B. be wear C. be worn D. be wearing

4. You promised her a letter; you ought to …………………. days ago.

A. write B. be writing C. have written D. be written

5. After the test papers …………………. to the students in class tomorrow, the students …………………. their next assignment.

A. will return – will be given B. will be returned – are given C. are returning – are giving D. are returned – will be given

6. The class for next semester is too large. It ought to …………………. in half.

A. be divided B. divide C. have divided D. have been divided

7. The entire valley can …………………. from their mountain home.

A. see B. be seen C. being seen D. sees

8. He is wearing a gold ring on his fourth finger. He must………………….

A. have been married B. be married C. marry D. have married

9. A child should …………………. everything he or she wants.

A. gives B. give C. have been given D. be given

10. Your daughter has a good voice. Her interest in singing …………………. encouraged.

A. should be B should C. be D. have

11. I found this book on my desk when I came to class. It must ……. by one of the students in earlier class.

A. be left B. have been left C. leave D. have left

12. You had better ………………….your chores before Mom gets home.

A. be finished B. have finished C. have been finished D. finish

13. These books will have to …………………. to the library tomorrow.

A. return B. have returned C. being returned D. be returned

14. Ann’s birthday was on the 5th, and now it’s already the 8th. Her birthday card …. a week ago.

A. will be sent B. can be sent C. should have been sent D. should have sent

15. You …………………. me to Dr. Gray. We’ve already met.

A. don’t have to introduce B mustn’t be introduced C. shouldn’t introduce D. mustn’t introduce

16. Bill ………………….Ann to the party tomorrow.

A. will be invited B. will invite C. will have invited D. will have been invited.

17. A new hospital ………………….in this area.

A. are going to be built B. builds C. is going to be built D. is going to build

18. Mike …………………. What’s going on in his English class.

A. can’t understand B. can’t be understood C. could have understood D. could have been understood

19. Our test papers ………………….by our teachers now.

A. are marking B. are being marked C. will mark D. will be marked

20. ………………….the birds in your garden at three o’clock yesterday afternoon?

A. Did you feed B. Were you fed C. Were you being fed D. Were you feeding

Hai gương phẳng có các mặt phản xạ hợp với nhau một góc α. Chiếu một tia sáng SI đến gương thứ nhất, phản xạ theo phương IJ đến gương thứ hai rồi phản xạ tiếp theo phương JR. Tìm góc hợp bởi hai tia SI và JR trong các trường hợp sau:

a) α là góc nhọn

b) α là góc tù

c) α = 900