1) Fortunately, I .... working alone otherwise I would have got really bored at the night shift. a) was supposed to b) was to c) was used to d) would e) used to 2) I don't think it was a good idea to intervene, instead, you .... your child to abandon the habit of thumb-sucking gradually, all by himself. a) have allowed b) had allowed c) must have allowed d) were able to allow e) could have allowed 3) After the voyaging ship was wrecked during a storm at sea, unfortunately, only two of the men on board .... swim to the small island nearby. a) might b) were supposed to c) could d) were able to e) had to 4) I don't know why she didn't ask me how to do it as I ---- her. a) must have helped b) could have helped c) might help d) should have helped e) could help 5) Martin ---- my tennis racket without asking my permission. I got really angry with him. a) needn't have taken b) must not have taken c) shouldn't have taken d) didn't need to taken e) might not have taken 6) I don't know why Peter is so late; do you think he ---- lost coming here? a) may get b) could get c) must have got d) might have got e) was to have got 7) What ---- to Phil? He said he ---- here at eight o'clock. a) might have happened / will be b) should have happened / has been c) may happen / will have been d) would happen / is e) can have happened / would be 8) One of the US national security advisers ---- there ---- better intelligence sharing before the September 11 attacks. a) had acknowledged / can be b) acknowledges / might be c) has acknowledged / could have been d) acknowledged / must be e) would acknowledge / will have been 9) We all think that Maria ---- an interesting person to meet as we ---- a lot of stories about her so far. a) is / had heard b) can be / heard c) might have been / hear d) would be / have heard e) will be / will have heard 10) As a young woman who had never given birth before, she ---- what the experience of childbirth ---- like. a) doesn't know / will be b) may not know / is c) must not have known / will be d) may not know / would be e) couldn't have known / would be 11) Apple Computers ---- the share of the market held by Microsoft in the late 1990s but unfortunately they didn't have a clear business plan to more ambitiously pursue their business goals. a) could capture b) needn't have captured c) should capture d) might have captured e) might capture 12) Many immigrants now agree that they ---- their traditions when they first settled in America. a) shouldn't have given up b) don't have to give up c) may not have given up d) might not give up e) needn't give up 13) Although working conditions ---- in many occupations in the past few years, one can never be safe, particularly in places with higher risk occupations. a) might improve b) can't have improved c) may have improved d) could improve e) needn't have improved 14) A good supervisor ---- with people who attempt too much than with those who try too little because hard-working staff contributes much to all aspects of work. a) shouldn't work b) would rather work c) had better not work d) is not able to work e) can't work 15) If you want to get a good night's sleep, you ---- any tea or coffee in the evenings. a) would rather drink b) don't have to drink c) mustn't drink d) were able to drink e) could drink 16) Road conditions ---- much in the last fifteen years, since the government hasn't invested anything to renew the roads. a) must have improved b) needn't have improved c) didn't need to improve d) ought to have improved e) can't have improved 17) A new report suggests that a vaccine that offers at least partial protection against HIV ---- available in the near future. a) had to be b) could be c) used to be d) might have been e) would rather be 18) He ---- technical support when his computer broke down because he doesn't know much about computers. a) must have had b) needn't have had c) can't have had d) didn't have to have e) shouldn't have had 19) The new steam powered and mechanized farm equipment .... the work easier but they couldn't get it to work. a) was able to make b) can't have made c) didn't have to make d) might have made e) had better make 20) If you plan to take a long trip in the car, you must get a full tank of gas or you ---- out of gas. a) have to run b) should have run c) had better run d) might run e) are used to running

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