Mr．Bush is on time for everything．How ________ it be that he was late for the opening ceremony?

A．can

B．should

C．may

D．must

Peter ________ come with us tonight, but he isn't very sure．

A．must

B．may

C．can

D．will

A left-luggage office is a place where bags ________ be left for a short time, especially at a railway station．

A．should

B．can

C．must

D．will

－I heard they went skiing in the mountains last winter．

－It ________ true because there was little snow there．

A．may not be

B．won't be

C．couldn't be

D．mustn't be

－Is John coming by train?

－He should, but he ________ not．He likes driving his car．

A．must

B．can

C．need

D．may

－________ I tell John about it?

－No, you needn't．I've told him already．

A．Shall

B．Can

C．May

D．Do

－Isn't that Ann's husband over there?

－No, it ________ be him－I'm sure he doesn't wear glasses．

A．can't

B．must not

C．won't

D．may not

You ________ be tired－you've only been working for an hour．

A．must not

B．won't

C．can't

D．may not

I often see lights in that empty house．Do you think I ________ report it to the police?

A．should

B．may

C．will

D．can

－Who is the girl standing over there?

－Well, if you ________ know, her name is Mabel．

A．may

B．can

C．must

D．shall