A、  B、  C、  B(A)问题是询问时间段，却用距离回答，所以此项是错误的。(B)回答离家一个月左右，故为正确答案。(C)问题是询问时间段。却告知方向，所以此项是错误的。

You said there would be a 10 percent discount, didn’t you?
(A)No, less than 20 employees.
(B)I haven’t counted them.
(C)That only applies to large orders.

How long have you been away from home?
(A)Two kilometers.
(B)About a month, I think.
(C)Turn left at the next corner and walk about two blocks.