问题

Who it be that is knocking at the door—It be Father, but I’m not sure.

A:can; must
B:can; may
C:must; can
D:may; must;

正确答案是：

同类题型

ingonline cchoice, but not _____ websites aresafeenoung for shopping.

What a nice coat! How much did you_____ for it It_____ me twenty yuan.

We prefer ________at the party to________.

Does Tom _________ any soccer balls—Yes, he _________ some.

Excuse me. May I speak to Jill, please—________