2 . The ground is covered with water. It must have rained last night. （英译汉）
_______________________________________________________________________________

3 . He speaks English fluently. He ___________ have learned English before. (根据句意填空)

4 . The letters were also beautifully illustrated — each must have taken its true author, Tolkien, a long time to complete.
译文: 这些信件有美丽的插图, _____________________。

6 . I didn’t hear your call. I __________ asleep at that time.

A．must be

B．should be

C．must have been

D．should have been

7 . 保罗在演讲比赛中表现得很好。他上星期肯定练习了很多次。
Paul did a great job in the speech contest. He ________ ________ ________ many times last week.

8 . You ________ have ever been in a situation where you know the other person is right yet you cannot agree with him. (用适当的词填空)

9 . Look at his strong muscles now! He ________ worked out regularly over the past year.

A．could have

B．should have

C．might have

D．must have