A、  B、  C、  ACould you…?(可以做……吗?)请求→接受回答

Where should I put all these papers?
(A) On the shelves over there.
(B) Let’ s move the cabinet.
(C) At 7 o’clock.

Could you return my call before 3 p. m. ?
(A)  Sure, I’ II call you around 2:30.
(B)  No, she hasn’ t returned yet.
(C)  No, I think it’ s 4 p. m.