Someone is knocking at the door. Who________ it be?
A: can
B: may
C: must
D: will
A: can
B: may
C: must
D: will
举一反三
- "Someone is knocking at the door." "Who can __ be?"
- Someone is knocking at the door. It ______ my mother. It's time for her to be back. A: can be B: may not be C: must be D: mustn't be
- "Someone is knocking at the door.""Who can __ be?" A: he B: she C: it D: they
- There is someone knocking at the door. __________ it be Tom? A: Can B: Must C: Should D: Ought
- Someone is knocking at the door. Go to see ______. A: who he is B: who is it C: who it is