问题补充：
---I’m so glad I can start my car again with your help. Thank you very much, sir!
---.
A. Never mind.
B. With pleasure.
C. Not at all.
D. My duty.
答案：
A. Never mind.
B. With pleasure.
(答案→)C. Not at all.
D. My duty.
解析：With pleasure乐意帮忙，用于别人请求帮忙的答语；Not at all不客气，感谢答语。
