11. In recent years many football clubs _____ as business to make a profit.(QE0904-20)

        A. have run        B. have been run    C. had been run      D. will run

        【答案】B。本题考查的是动词的时态和语态。In recent years是现在完成时的标志。而且动词run（经营管理），和足球俱乐部之间是被动关系。因此选择B。最近几年很多足球俱乐部作为盈利机构被开办起来。

        12. Since he left the university, he _____ in an accounting company. (QE06-04-16)

        A. has been working           B. had worked

        C. had been working           D. was working

        【答案】D这句话的意思是自从大学毕业以后，他就在这家会计公司工作。该句是since引导的时间状语从句。由于该动作一直持续到现在，所以用完成时的进行时态。这句话强调的是自从大学毕业以后他就一直在哪家公司工作.

        13. Until yesterday, Miller’s family _____from him for six months.

            A. hasn’t heard     B. hasn’t been hearing       C. hadn’t heard     D. didn’t bear

        【答案】C。直到昨天，米勒家6个月没有收到他的消息了。时间段标志词“for six month”,因此选择完成时。

        14. The chemistry class ___ for five minutes when we hurried there. (QE95-24)

        A. had been on     B. was on    C. has been on   D. would be on

        【答案】A for five minutes是延续性时间状语，句子时态应用完成时； when 引导的时间状语从句为过去式，主句时态应与之对应，所以应该用过去完成时。

        15. All the apparatus______ before the experiment began.  

            A. have been tested       B. had been tested         C. were tested             D. had tested

        【答案】B。所有的设备都在实验开始前被测试过了。“test”是在过去的某个时间（began）之前发生的，即过去的过去，因此选择完成时。

        16. I ___ writing the article by the time you get back.. (QE00-24)

        A. shall finish   B. must have finished  C. have finished   D. shall have finished

        【答案】：D。本句为将来完成时。表示在将来的某一时刻或将来的某一时刻之前已完成，这一动作可以继续下去。When you come again in July we shall have moved into a new house.七月份你们再来的时候，我们就搬进新房子里去了。I shall have done it by the end of this week.我要在周末做完它。本句的意思是“我要在你回来之前写完这篇文章”。

        17. Mrs. White became a teacher in 1985. She _____ for twenty years by next summer. (QE07-11-43)

        A. will teach     B. would have taught   C. has been teaching   D. will have been teaching

        【答案】D此题考查的是动词辨析。A 建议，但无suggest sb to do 这种用法；B 吸引；C 引诱，D劝说。根据题意应该是：Alice很相信你，只有你能劝说她放弃这种愚蠢的念头。故选D

        18. In another year or so, you _____ all about it. (QE08-04-33)

        A. forget   B. would forget   C. have forgotten   D. will have forgotten

        【答案】D大概一年以后，你就会完全忘记它了。将来完成时。

        19. By this summer, Elizabeth ______ here for ten years.

            A. will work     B. works    C. will have worked    D. has worked

        【答案】C。到今年夏天为止，伊丽莎白就在这里工作十年了。标志词“By this summer”到将来的某个时间为止，所以用将来完成时。

        20. You needn't hurry her. She ___ it by the time you are ready.

        A. will have been finishing   B. would finish   C. will have finished   D. will be finishing

        【答案】C。你没必要催她。你准备好了的时候，她就会做完了。标志词“by the time”。