--- Could I use your bike for a while. Sam?
--- . I’m not using it.
A. I have no idea
B. Sure, go ahead
C. No. you can’t
D. Never mind!
网友回答
A. I have no idea
(答案→)B. Sure, go ahead
C. No. you can’t
D. Never mind!
解析：
这题考查交际用语，问句是：我可以用你的自行车吗？从第二句的I’m not using it.看出是同意的，所以B。“当然可以，请便”。