--- May I use your mobile phone? --- .A. Why not?B. Go ahead.C. OK enjoy yourselfD. Yes

问题补充：

--- May I use your mobile phone?

--- .

A. Why not?

B. Go ahead.

C. OK, enjoy yourself

D. Yes, but you’d better not.

答案：

A. Why not?

(答案→)B. Go ahead.

C. OK, enjoy yourself

D. Yes, but you’d better not.

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