1. --- Oh, dear. I forgot the air tickets.--- You ______ something.A. have leftB. are always leavingC. are leavingD. always left2. --- I ______ so busily recently that I ______ no time to help you with your math.--- That’s OK. I can manage it by my self.A. have been working; haveB. have worked; hadC. am working; will haveD. had been working; had had3. Remember to send me a photo of us next time you ______ to me.A. are writingB. will writeC. has writtenD. write4. He ______ at the meeting, but his heart attack prevented him.A. will speakB. is going to speakC. had to speakD. was going to speak5. --- I beg your pardon, but I didn’t quite catch you.--- Oh, I ______ myself.A. am talking toB. talked aboutC. have talked toD. was talking to6. I ______ ping-pong quite well, but I haven’t had time to play since the New Year.A. will playB. have playedC. playedD. play7. I first met Tom 10 years ago. He ______ in a radio factory at that time.A. had workedB. has workedC. was workingD. has been working8. --- What ______ when I phoned you?--- I ______ my work, and I wanted to go out.A. have you done; finishedB. were you doing; have finishedC. did you do; had just finishedD. were you doing; had just finished9. --- Have you finished the report？--- No. I ______ it all this week.A. will doB. had doneC. have doneD. have been doing10. I can guess you were in a hurry. You ______ your sweater inside out.A. had wornB. woreC. were wearingD. are wearing11. --- We ______ that you would fix the TV set this week.--- I’m sorry. I ______ to fix it this week, but I’ve been too busy.A. had expected; had intendedB. are expecting; had intendedC. expect; intendD. expected; intend12. --- Why? Tom, your shirt is so dirty!--- Mum, I ______ my storeroom downstairs.A. cleanedB. have cleanedC. was cleaningD. have been cleaning13. They won’t buy new clothes because they ______ money to buy a new house.A. saveB. are savingC. have savedD. were saving14. The traffic in our city is already good and it ______ even better.A. getsB. gotC. has gotD. is getting15. --- I will come to attend your lecture at 10:00 tomorrow.--- I’m sorry, by then my lecture will have ended and I ______ my guests in my office.A. is being metB. will meetC. will be meetingD. will have met16. --- Alice came back home the day before yesterday.Really? Where ______?A. has she beenB. had she beenC. has she goneD. had she gone17. I know Mr. Brown; we ______ to each other at an international conference.A. are introducedB. are been introducedC. were introducedD. had been introduced18. --- Where do you think ______ he ______ the computer?--- Sorry. I have no idea.A. has; boughtB. 不填; boughtC. did; buyD. 不填; buys19. Don’t bother t o look for my dictionary --- it ______ some day.A. turns upB. has turned upC. will turn upD. is going to turn up20. --- What do you think of this kind of TV set, which ______ in Shanghai?--- Well, I don’t care about such things.A. was madeB. is madeC. has been madeD. had been made21. --- Did he notice you enter the room?--- I don’t think so. He ______ to the radio with his eyes shut.A. listenedB. was listeningC. has listenedD. had listened22. The plane ______ at 7:00 pm, so I have to be at the airport by 6:40 at the latest.A. has leftB. would leaveC. will have leftD. leaves23. The train ___ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.A. went B. is going C. goes D. will be going24. I used to drink a lot of tea but these days I ______ coffee.A. preferB. preferredC. had preferredD. am preferring25. The vegetables didn’t taste very good. They ______ too long.A. had been cookedB. were cookedC. have cookedD. cooked26. --- Remember the first time we met, Jim?--- Of course I do. You ______ in the library.A. were readingB. had readC. have readD. read27. I want to buy that kind of cloth because I ______ the cloth ______ well.A. have told; washesB. have been told; washesC. was told; washedD. have been told; is washed28. --- Is Tom still smoking?--- No. By next Saturday he ______ for a whole month without smoking a single cigarette.A. will beB. will have goneC. will have beenD. has been going29. --- ______ Betty this morning?--- Not yet, but she is sure to be here before noon.A. Have you seenB. Will you seeC. Do you seeD. Did you see?30. Jim talked for about half an hour yesterday. Never ______ him talk so much.A. I heardB. did I hearC. I had heardD. had I heard31. --- Look at the black clouds. It ______ soon.--- Sure. If only we ______ out.A. is raining; didn’t comeB. is to rain; won’t startC. will rain; haven’t startedD. is going to rain; hadn’t come32. He ___ articles for our wall-newspaper these three years, and he ____ about forty articles.A. has been writing; has writtenB. has been writing; wroteC. is writing; has been writingD. has written; has written33. She ______ to the office than she got down to writing the report.A. has no sooner gotB. had hardly gotC. no sooner gotD. had no sooner got34. 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 comingB. had comeC. comesD. would come35. --- Don’t forget to bring my new books tomorrow afternoon.--- No, I ______.A. don’t B. do C. won’t D. will36. I decided to go to the library as soon as I ______.A. finished what I was doingB. finished what I didC. would finish what I was doingD. finish what I did37. You won’t know whether the coat fits you until you ______ it on.A. will tryB. have triedC. triedD. are trying38. My dictionary ______. I have looked for it everywhere but still ______it.A. has lost; don’t findB. is missing; don’t findC. has lost; haven’t foundD. is missing; haven’t found39. ______ it with me and I’ll see what I can do.A. When leftB. LeavingC. If you leaveD. Leave40. --- How are you planning to travel to Shanghai?--- I ______ yet, but I ______ taking a train.A. didn’t decide; am consideringB. haven’t decided; considerC. haven’t decided; am consideringD. hadn’t decided; have considered41. --- 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 wonderB. did wonderC. was wonderingD. had wondered42. --- 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. wasB. have beenC. amD. had been43. With the development of science, more new technology ______ to the field of IT.A. has introducedB. is being introducedC. is introducedD. was introduced44. --- Who’s the man over there?--- It’s Jack.--- Oh? ______ in Italy.A. I think he’sB. I’ve thought he’s beenC. I thought he wasD. I’d thought he’d been45. --- I dropped in at your house at about ten last night, but you weren’t in.--- I ______ regular exercises at the club.A. didB. was doingC. had doneD. have been doing46. --- Each of the students, working hard at their lessons, ______ the book.--- So have I.A. is reading B. has read C. reading D. reads47. The baby is generally healthy, but every now and then he ______ a cold.A. has caughtB. is catchingC. will catchD. does catch48. It is when the plane ______ that you’d better find out at the booking office.A. would take offB. had taken offC. was taking offD. is taking off49. --- 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 knowC. won’t know D. haven’t known50. I thought Jim would say something about his school report, but he ______ it.A. doesn’t mentionB. hadn’t mentionedC. didn’t mentionD. hasn’t mentioned答案：1-5 BADDD 6-10 DCDDD 11-15 ADBDC 16-20 BCBCB21-25 BDDAA 26-30 ABBAD 31-35 DADCC 36-40 ABDDC 41-45 CDBCB 46-50 BDDBC。