问题补充:
---May I use your cellphone?
---. We are good freinds
A. No trouble at all.
B. Of course you may
C. You are welcome
D. It all depends
答案:
A. No trouble at all.
(答案→)B. Of course you may
C. You are welcome
D. It all depends
解析: A:不麻烦;B:当然你可以;C:不用谢;D:看情况而定。由We are good freinds可知, 对方同意说话者使用手机, 故B项正确。