A. Although B. Unless C. If

【题目】—Good morning. Can I help you?
—__________.
A.No, you can't.
B.I don't think so
C.Yes. I'd like a new flat.
D.Help me.

A. studying B. are studing C. are studying

【题目】— ________ we clean the classroom immediately?— No, you ________. You ________ clean it after school.
A.Must; needn't; can
B.Need; mustn't; may
C.Must; mustn't; can
D.Shall; can't; may

【题目】Her grandparents ________ in Shanghai for about twenty years.
A.live
B.have lived
C.are living
D.lived

– No, it _____ be my bag. Bob's name is on it.

A. can’t B. must C. needn’t

–Sorry, I don’t know.

A. where he was B. where did he go C. where he is

【题目】— Did you notice someone _______ the meeting room just now?— Sorry, I was making a phone call.
A.to leave
B.leaves
C.leave
D.left

A．will be，will go B．am，will go

C．am，go D．will，be

【题目】They _________ any help because they can do it by themselves.
A.don't need to
B.don't need
C.doesn't need
D.doesn't need to