2 . 在空白处填适当的情态动词。
1. “Look at these tracks. It ______ be a wolf.” “Don’t be so sure. I think it ______ be a fox.”
2. I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.
3. It’s a very kind offer, but I really ______ accept it.
4. The boss said to the secretary, “If you work well, you ______ have a rise.”

3 . --- Difficulties always go with me!
--- Cheer up! If God closes door in front of you, there be a window opened for you.

A．must	B．would
C．could	D．can

4 . ---She looks very happy. She ______ have passed the exam.
---I guess so. It’s not difficult after all.

A．would	B．should
C．must	D．ought to

5 . —What        it be?
—It        be a man, for it is not moving. It        be a dustbin, I think.

A．can; may; must	B．can; can’t; must
C．can; must; can	D．may; may not; could

6 . —I met your uncle on my way to school this morning.
—Ah? You _____ be joking. He flew to Germany yesterday evening!

A．might

B．should

C．could

D．must

7 . ---_____ you play the violin at midnight? It disturbs the neighbours!
--- Sorry, I was too absorbed in it and forgot the time.

A．Can

B．Should

C．Would

D．Must

8 . -----Someone is knocking at the door.It ____ be Tom .
-----No, it ______ be him ;he has gone to Sydney.

A．must, can’t	B．might, mustn’t
C．may, needn’t	D．can, mustn’t

9 . Now that the sign reads, “No person ______ smoke here”, please choose a seat in the smoking area over there if you _______ smoke.

A．must; shall

B．will; must

C．shall; must

D．can; should