—Could I borrow your bike?
— , but please give it back by Friday.
- A.I’m sorry
- B.Of course
- C.Certainly not
- D.No, thanks
答案
正确答案:B

情态动词could用于有礼貌地提出要求或请求准许,用于疑问句,比can更委婉。回答时要用can,不能用could。此外,肯定回答还可以用Sure./Certainly./Of course./No problem./With pleasure.等;否定回答还可以用I’m afraid not.等。由答语“但请在周五前归还”可知是借给对方了。所以答案选B。

略
