It _________ rain this afternoon, but I am not sure.

The police still haven’t found her, but they’re doing all they      .

A．will              B．can              C．may              D．must

________ you please pass me that book?

[　　]

－________ I come tomorrow?－No, you needn't.

[　　]

—How is your friend coming?

—I’m not sure．He _______ drive here.

A．may           B．can         C．must          D．will