— 　　　 I smoke here, Sir?
— No, you 　　　. Look! It’s non-smoking area.
A. Can; needn’t   B. May; mustn’t    C. Could; won’t  

—Must I finish the book today?
—Yes, you ________, but you ________ finish it now. Have a rest.

---.Look! It _____be your uncle .
----It_____ be him . He has gone to Xi’an.

---Is John coming by train?    ---He should, but he ________ not. He likes driving his car.

Is that your best friend Kitty?
— No, it _________ be her. She flew to Singapore yesterday.

－Is Mr. Li in his office ?
－No, he __________ in the office. He’s ill in hospital.

–May I take these books out of the reading room?
-- No, you _________.

The guitar_______ belong to Alice. Only she plays the
guitar here.
A. could   B. must  C. can’t                     

Maybe he can____________in their basketball team.
A、is                     B、be                       C、are

─ Look, Stella is there!
─ That ______ be her. She doesn’t like singing.