-- Do you think it's a good idea to make friends with your students?
-- _____ , I do. I think it's a great idea.
| A．Really | B．Obviously |
| C．Actually | D．Generally |
The room is in a terrible mess; it __________ have been cleaned.
| A．can't |
| B．mustn't |
| C．shouldn't |
| D．wouldn't |
-Tom almost ran into a pole yesterday while driving on the highway.
-I suppose he __________ too fast.
| A．had driven |
| B．was driving |
| C．must drive |
| D．should have driven |
-Guess what! I have got an A for my term paper.
-Great ！ You __________ read widely and put a lot of work into it.
| A．must have |
| B．should |
| C．must |
| D．should have |
-Did you visit the museum last week?
-No, we __________，but we spent too much time shopping.
| A．could have |
| B．could |
| C．must have |
| D．must |
-I can't believe that Jeff __________ have quarreled and fought with his boss.
-Well, if one __________ ask for trouble, it just can't be helped.
| A．would; will |
| B．must; may |
| C．should; must |
| D．need; dare |