A、  B、  C、  B题干是以疑问词开头的，所以回答了No的(A)要从正确答案中剔除。因为问的是所需纸张的规格，所以具体明示为A4的(B)才是正确答案。如果问“着不着急用”的时候就可以用(C)来回答。

Would you like some help with dinner?
(A)No thanks, I’m almost done.
(B)Actually, I have plans tonight.
(C)Why don’t we try the Greek place?

What size paper do we need?
(A)No, not anymore.
(B)One box of A4 paper should do.
(C)It’s needed as soon as possible.