1 . Mary’s bedroom is so tidy. She________have cleaned it yesterday.

A．must

B．should

C．need

D．would

2 . —— Guess what? I’ve won the third prize in the writing competition in Tianjin area.
—— You don’t say. I know you are not good at English. You ______ great efforts!

A．should have made

B．must have made

C．might make

D．could make

3 . They________ have completed their program ; or they wouldn’t be enjoying themselves by the seaside.

A．should

B．must

C．wouldn’t

D．can’t

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

A．must have made

B．should have made

C．could make

D．would make

5 . — She looks very happy. She ________the exam.
—I guess so.

A．should have passed	B．could have passed
C．must pass	D．must have passed

7 . It ________have rained last night, for the ground is wet.

A．can

B．must

C．should

D．would

9 . — Excuse me, where is George?
— George ________ too far. His coffee is still warm.

A．must have gone	B．might have gone
C．can’t have gone	D．needn’t have gone

10 . —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