— Listen! Is Professor Johnson giving a report in the hall?

— No, it        be him. He has gone to Japan.

A．needn’t            B．may not           C．mustn’t           D．can’t

---Listen! Is Professor Bloom giving a speech in class?

---No, it ________ be him. He has gone to France.

1. A.
   may not
2. B.
   mustn't
3. C.
   needn't
4. D.
   can't

--- Listen! Is Professor Bloom giving a speech in class?

--- No, it       be him. He has gone to France.

A．may not                     B．mustn’t               C．needn’t     D．can’t