A、  B、  C、  C(A)不可以使用yes／no来回答疑问词引导的疑问句，并且要注意call和called。(B)by+名词的形式应该用来回答询问方式手段的how疑问句。(C)针对询问打电话的原因，做出了打电话是因为有紧

When should I call you?
(A)All right, thank you.
(B)He arrived this morning.
(C)This evening would be good.

Why did the marketing manager call you this morning?
(A)Yes, she called me twice.
(B)Actually, by email.
(C)She wanted to ask me an urgent question.