单项选择题

A:Oh. But why didn't he just own up and tell someone?
B:（）

A. So be careful with our job
B. He was too scared that he would be fired, I suppose
C. You should have told him that earlier

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单项选择题

A:Here you are, Sir.
B:（）

A. All right.
B. Yes,here we are
C. Thank you very much

单项选择题

A: Could I talk to Prof. Lee?
B:（）

A.Yes,speaking.
B.Oh, it's you
C.I am the operator here.

单项选择题

A:Hello, I'm Susan. Nice to meet you.
B:（）

A. And you?
B. Nice to meet you, too.
C. Very nice.