1 . With the loss of blood, he couldn’t __________ (survive) for very long after being shot. (所给词的适当形式填空)

2 . The boss ________ (go) far, for the cup of coffee is still warm and his car is still outside. （所给词的适当形式填空）

3 . —Did you paint your house yourself? It looks good.
—I_______have done all the painting. I asked my brother to help me.

A．couldn’t

B．mustn’t

C．needn’t

D．shouldn’t

4 . 用情态动词或时态填空
1. I didn’t arrive on time, otherwise I _______ missed the first bus.
2. —Did you say that there were only ten tickets? There ________be twelve.
—I said it was twelve.
3. If I _______ plan to do anything I wanted to, I’d like to go to Tibet and travel through as much of it as possible.
4. —What does the sign over there read?
—“No person ____________ smoke or carry a lighted cigarette, cigar or pipe in this area.”
5. No one thought that he could fly over the Antarctic, but Byrd________ do it by making his plane light.
6. The ground is wet. It_________ have rained last night.
7. Tom ought not to _________（tell）me your secret, but he meant no harm.
8. He might _________（give）you more help,even though he was very busy.
9. The old man ________ have a smoke under a big tree every afternoon after he finished his farm work.
10. He daren’t speak English before such a crowd, ________ he?

5 . He ______ writing the paper now. He hadn’t written a single word when I left him ten minutes ago.

A．shouldn’t be	B．can’t have finished
C．can’t be	D．mustn’t have finished

6 . From her knowledge of Douglas's habits，she feels sure that the attacker last night ___________Douglas.

A．mustn't have been	B．can't have been
C．shouldn't have been	D．wouldn't have been

7 . 一I think I saw Mr. Smith at yesterday's party.
一He ______ there. He is now on a business trip in Greece. And he left the day before yesterday.

A．mustn't have been	B．couldn't have been
C．might not be	D．should not be

8 . —Did you hear that Jack used to be a policeman for two years?
—You’re kidding! He ______, for he’s too short.

A．can’t be	B．can’t have been
C．may not be	D．may not have been

9 . —What did you say to your sister? I saw her crying in the room.
— It _________ my fault. I just said hello to her when I met her, nothing else.

A．must have been	B．can’t have been
C．oughtn’t to be	D．should have been

10 . We ________ such great achievements without your efforts. Thanks a lot.

A．can’t have made	B．couldn’t have made
C．were unable to make	D．are unable to make