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 myself.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 Tom10 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 w ill 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 internationalconference.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 to 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 6:40at 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 aboutnine o ' clock tonight.A. wentB. is goingC. goesD. 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 talkso 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. Whenhe 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 ' tB. doC. won tD. 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 y ou ______ 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 , 丄? 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 readingB. has readC. readingD. 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 knowB. didn ' t knowC. won' t knowD. 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 ABDDC41-45 CDBCB 46-50 BDDBC。