––– Could I use your phone for a moment?
––– . Help yourself.
A. Take your time
B. Forget it
C. By all means
D. Never mind
网友回答
A. Take your time
B. Forget it
(答案→)C. By all means
D. Never mind
解析：考查交际用语。Take your time 别着急，Forget it 算了吧，By all means 当然可以，Never mind 不要紧，句意：我能用一下你的手机吗？当然可以，用吧。所以选C。