1 . Your cousin ________ have enjoyed his trip in Jixian County, didn’t he? He looks amazingly different. (用适当的词填空)

2 . There was no one else in the classroom, so he ______ it by himself.

A．should have done

B．need have done

C．must have done

D．could have done

3 . It ________ (rain) last night, for the ground is wet. (所给词的适当形式填空)

4 . Jack must have been playing football and Mary ________ (do) her homework. (所给词的适当形式填空)

5 . —Mary’s score on the test is the highest in her class.                 
—Really?She ________ have studied very hard.

A．may	B．ought to
C．must	D．should

6 . Jack described his father, who must ________(be) a brave boy many years ago, as a strong­willed man.
杰克把他的父亲描述成一个意志坚强的人，多年以前他肯定是一个勇敢的男孩。

7 . We________ last night, but we went to appreciate the flowerbeds and streetlights in Tian’anmen Square instead.

A．might study	B．could study
C．should have studied	D．must have studied

8 . —You shouldn’t have talked back to our teacher like that.It was awfully impolite.
—You are right.I ________ crazy at that moment.

A．must have been	B．must be
C．could have been	D．should have been

9 . Your cousin ________ his trip in Jixian County, didn’t he? He looks amazingly different.

A．will have enjoyed	B．should have enjoyed
C．can have enjoyed	D．must have enjoyed

10 . —Few of my fellows passed the politics quiz this time on campus.
—How come? It ________ tough.

A．should be	B．might be
C．must have been	D．could have been