— There’s somebody at the door. Who ______ it be? Is it the postman ?—No, it ______ be him. It’s just seven o’clock. It’s too early.
#74903
A
may, can’t
B
will, won’t
C
may, mustn’t
D
must, may not
推荐题目
We ______ the difficulty together, but why didn't you tell me?
#63504
A
should face
B
might face
C
could have faced
D
must have faced
--- My son is _____ to be seen. Where has he gone? --- I think he _____ in the building. 
#62906
A
nowhere; must be hiding
B
nowhere; must be hidden himself
C
anywhere; hides
D
everywhere; hides himself