---Excuse me is this seat taken?---.Please have a seat.A. Yes it isB. All rightC. No it

问题补充：

---Excuse me, is this seat taken?---.Please have a seat.

A. Yes, it is

B. All right

C. No, it isn’t

D. OF course

答案：

A. Yes, it is

B. All right

(答案→)C. No, it isn’t

D. OF course

解析：答句中提供了Please have a seat，说明这个位没有人坐，所以选no, it isn’t。