--Is the man standing outside the teacher’s office Mr. Zhou?
--No, it ______ be him. He has gone to Hong Kong for an academic conference.
A.mustn’t | B.can’t | C.needn’t | D.couldn’t |
--Is the man standing outside the teacher’s office Mr. Zhou?
--No, it ______ be him. He has gone to Hong Kong for an academic conference.
A.mustn’t | B.can’t | C.needn’t | D.couldn’t |