Exercise 1. Choose the best answer 

29. Do you know that ____ can cause pollution?

A. littering B. releasing C. protecting D. keeping

30. You can _______ bargain at the supermarket because the prices are fixed.          A. always B. often C. never D. sometimes 

31. There were only a few houses left standing _____ the tornado hit. 

 A. after B. before C. as soon as D. until

32. The shuttle bus ____ every 15 minutes to take customers to the parking lot

A. will leave B. leaves C. left D. was leaving

33. We _____ home economics next semester. We have music instead. 

 A. didn’t have B. won’t have C. don’t have D. weren’t having

34. The announcement says that the sale _______ for just two hours, from 17:00 to 19: tomorrow. A. lasts B. will last C. lasted D. last 

35. Phong: My uncle called this morning. A flood destroyed his house. Mark: ________                   

A. I’m glad. B. I’m sorry to hear that C. You’re welcome. D. You’re very kind.     

36. What were you doing when the volcano _______?                                             

A. erupted B. erupt C. erupts D. was erupting

 37. I ____ TV at 9 p yesterday

A. didn’t watch B. don’t watch C. wasn’t watching D. isn’t watch

38. Water pollution can put negative _________ on our health.

 A. contamination B. affects C. effects D. problems

39. Rescue _______ are trying hard to save people in the flooded area.

 A. worker B. workers C. child D. children

40. When I came to his house, Jack ________ a football match on TV.

 A. it watching  B. has watched  C.was watching  D. will watch

41.He drives__________than his brother

A.more careful   B.more carefully   C.most careful   D.most carefully

42. I will call you________i arrive home

A.as soon as B.while   C.before   D.during

43. When I saw her yesterday, she ______ a red dress. 

 A. wore B. wears C. was wearing D. has worn

44. They lost all their ______ because the flood happened. 

 A. property B. discount C. speciality D. disaster

45. Lucy: Mum, can I go to the shopping mall with Hoa this afternoon? - Mum:"_______"               

A. No. You should go with Hoa. 

 B. The shopping mall is near here.

 C. Yes, I watched a good documentary.

 D. Dear, you're visiting the dentist this afternoon.

 46. My sister______ sport because she is really busy

A. doesn't usually play  B. doesn't usually plays  C. usually doesn't play  D. plays don't usually         

47. What_______ when his morther came home yesterday?

 A. were you doing  B.was you doing  C. are you doing  D. did you do

48. At this time last week, we_____ money for the earthquake victims.

 A. donate   B. were donating  C. are donating  D. donated 

49. I know that he _______ in the library at this time yesterday. 

 A. works  B. has worked  C. is working D. was working

50. _______ often happen in rainy season especially in the center of Vietnam.

A. Droughts  B. Storms  C. Floods  D. Sandstorms 

51. While they_____ for help, the rescue workers appeared.

 A.call  B. is coming  C. will come  D. were sleeping

52.His children _________ when he came home last night.

 A. comes  B. is coming  C. will come  D. were sleeping

53. The factory outlets_______ a special offer for all items next week as planned.  A. will give  B. give  C. are giving  D. are going to give

54. The Community Fair ______ this Spring, and we have all decided to attend it.  A. is held  B. will be held  C. will take place  D. is taking place

55. _______ they went home, they turned off all the cpmputers.

 A. After  B. When  C. Before  D. Because

56. Tom: " Do you ever drink coffee?" - Lan: " Yes, but only ____, not often. Just a few times a week .

A. usually  B. sometimes  C. rarely  D. never