A、  B、  C、  AShould I…?(我要做……吗?)yes／no疑问句→肯定回答

How long have you been working for JCR?
(A) Since 1994.
(B) Until the end of this week.
(C) I work out every other day.

Should I fill out this form for you?
(A)  That will be a big help.
(B)  No, I’m full.
(C)  Yes, she submitted it yesterday.