A、  B、  C、  A题目为询问是如何想出计划的How疑问句。How…常用来询问方法。

Didn’t you submit the report the other day?
(A) No, I’m still working on it.
(B) At the port.
(C) Yes, I have it.

How did you come up with that plan?
(A) I got the idea from a colleague.
(B) I booked a ticket online.
(C) I’ll take you down there.