A、  B、  C、  B(A)虽然以yes回答，但后面的内容与提问无关。(B)该选项的意思是据我所知不是那样，这一回答对确认事实的问句而言很可能成为正确答案。(C)重复使用了employee引起混淆，回答内容不符合提问。

How many brochures should I prepare for you?
(A)Six will be enough.
(B)From the cabinet.
(C)Last night.

The company is hiring new employees, isn’t it?
(A)Yes, I’d like to have lunch.
(B)Not that I know of.
(C)They need to see your employee ID card.