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

-----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

Someone is knocking at the door. Go and see________.

A．who is he      B．who he is      C．who is it       D．who it is

—Someone is knocking at the door. _____ it be Venis?

   —No, it _____ be her; she left for New York this morning.

   A. Can; mustn’t     B. Might; can’t   　 C. May; doesn’t     D. Can; can’t

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

1. A.
   must, can’t
2. B.
   might, mustn’t
3. C.
   may, needn’t
4. D.
   can, mustn’t