28. --- Is Tom still smoking?

　　--- No. By next Saturday he ______ for a whole month without smoking a single cigarette.

　　A. will be B. will have gone

　　C. will have been D. has been going

　　29. --- ______ Betty this morning?

　　--- Not yet, but she is sure to be here before noon.

　　A. Have you seen B. Will you see

　　C. Do you see D. Did you see?

　　30. Jim talked for about half an hour yesterday. Never ______ him talk so much.

　　A. I heard B. did I hear

　　C. I had heard D. had I heard

　　31. --- Look at the black clouds. It ______ soon.

　　--- Sure. If only we ______ out.

　　A. is raining; didn’t come

　　B. is to rain; won’t start

　　C. will rain; haven’t started

　　D. is going to rain; hadn’t come

　　32. He ______ articles for our wall-newspaper these three years, and he ______ about forty articles.

　　A. has been writing; has written

　　B. has been writing; wrote

　　C. is writing; has been writing

　　D. has written; has written

　　33. She ______ to the office than she got down to writing the report.

　　A. has no sooner got B. had hardly got

　　C. no sooner got D. had no sooner got

　　34. When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.

　　A. was coming B. had come

　　C. comes D. would come

　　35. --- Don’t forget to bring my new books tomorrow afternoon.

　　--- No, I ______.

　　A. don’t B. do C. won’t D. will

　　36. I decided to go to the library as soon as I ______.

　　　A. finished what I was doing

　　B. finished what I did

　　　C. would finish what I was doing

　　D. finish what I did

　　37. You won’t know whether the coat fits you until you ______ it on.

　　　A. will try B. have tried

　　C. tried D. are trying

　　38. My dictionary ______. I have looked for it everywhere but still ______it.

　　A. has lost; don’t find

　　B. is missing; don’t find

　　C. has lost; haven’t found

　　D. is missing; haven’t found

　　39. ______ it with me and I’ll see what I can do.

　　　A. When left B. Leaving

　　C. If you leave D. Leave

　　40. --- How are you planning to travel to Shanghai?

　　　--- I ______ yet, but I ______ taking a train.

　　　A. didn’t decide; am considering

　　B. haven’t decided; consider

　　　C. haven’t decided; am considering

　　D. hadn’t decided; have considered

　　41. --- Excuse me, sir. Would you do me a favour?

　　--- Of course. What is it?

　　　--- I ______ if you could take me to the station.

　　　A. would wonder B. did wonder

　　　C. was wondering D. had wondered

　　42. --- Got your driving license?

　　--- No. I ______ too busy to have enough practice, so I didn’t take the driving test last week. I’m going to next week.

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

　　43. With the development of science, more new technology ______ to the field of IT.

　　A. has introduced B. is being introduced

　　　C. is introduced D. was introduced

　　44. --- Who’s the man over there?

　　　--- It’s Jack.

　　　--- Oh? ______ in Italy.

　　A. I think he’s

　　B. I’ve thought he’s been

　　C. I thought he was

　　D. I’d thought he’d been

　　45. --- I dropped in at your house at about ten last night, but you weren’t in.

　　--- I ______ regular exercises at the club.

　　　A. did B. was doing C. had done D. have been doing

　　46. --- Each of the students, working hard at their lessons, ______ the book.

　　--- So have I.

　　A. is reading B. has read C. reading D. reads

　　47. The baby is generally healthy, but every now and then he ______ a cold.

　　A. has caught B. is catching

　　C. will catch D. does catch

　　48. It is when the plane ______ that you’d better find out at the booking office.

　　A. would take off B. had taken off

　　C. was taking off D. is taking off

　　49. --- I’m sorry, but there’s no smoking on this flight.

　　--- Oh, I ______ that. Sorry, I won’t again.

　　A. don’t know B. didn’t know

　　C. won’t know D. haven’t known

　　50. I thought Jim would say something about his school report, but he ______ it.

　　　A. doesn’t mention B. hadn’t mentioned

　　C. didn’t mention D. hasn’t mentioned

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