1 . 对不起，我迟到了。我可能关了闹钟又继续睡了。（late) （汉译英）

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2 . You can’t imagine that a gentleman ________ so rudely to an old lady.

A．shall have behaved	B．should have behaved
C．could have behaved	D．might have behaved

3 . 他可能已经处理了这个难题。(handle)（汉译英）

4 . One__________ as hard as one can at a young age before it becomes too late.

A．might have worked	B．ought to work
C．would work	D．must have worked

5 . Although there is no life on Mars now, some scientists think that there ________ some form of life a long time ago.

A．must be

B．may have been

C．can have been

D．can be

6 . 这个女孩看上去那么难过。她或许是知道了那个坏消息。
The girl looks so sad. She ________.

7 . Philip昨天没有出席会议，他可能已经去上海了。(may have done sth. )
Philip didn’t attend the meeting yesterday; __________________________________________.

8 . Jenny ______ with him at that time, for I was having dinner with her in my home.

A．can’t have been	B．mustn’t have been
C．must have been	D．may have been

9 . — Congratulations! You ________ have made great efforts for the English speech contest.
— Thanks. I do appreciate my teacher’s guidance.

A．might

B．must

C．should

D．could

10 . 你本可以邀请他参加你的婚礼的。（汉译英）