1 . He ________ have finished writing the paper. He hadn’t written a single word when I left him fifty minutes ago. (用适当的词填空)

2 . 你不可能硬拉吉米离开纽约，他认为纽约是地球上唯一的地方。
You ________ Jimmy out of New York; he thought it was the only place on earth.

3 . Mr. Smith ________________ (不可能去日本了), for I attended his lecture this morning. (根据汉语提示完成句子)

4 . You ________ have seen Mary at the meeting this morning, because she left for Beijing yesterday. (用适当的词填空)

5 . It’s said that they have swum to the island from the continent, but they ________ (不可能做到) because the ocean in between is too wide. (do) (根据汉语提示完成句子)

6 . Mary ________ my letter; otherwise she would have replied before now.

A．couldn’t have received	B．ought to have received
C．needn’t have received	D．shouldn’t have received

7 . 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)

8 . You couldn’t have d______ Jimmy out of New York: he thought it was the only place on earth．
可你没法把吉米拖出纽约，他觉得地球上只有纽约这么一个地方。

9 . It ______ last night, as the ground is still wet.

A．may have rained

B．must rain

C．can’t have rained

D．must have rained

10 . I didn’t see Fred in the library this morning. He_____have borrowed that book.

A．mustn’t

B．shouldn’t

C．couldn’t

D．needn’t