---Why not organize a school trip?.A. Good idea.B. That’s all right.C. You’re welcome.

问题补充：

---Why not organize a school trip?

--- .

A. Good idea.

B. That’s all right.

C. You’re welcome.

D. Never mind.

答案：

(答案→)A. Good idea.

B. That’s all right.

C. You’re welcome.

D. Never mind.

解析：本题考查交际用语。当别人给提建议时，经常用Good idea来回答。句意：——为什么不组织一次学校旅行呢？——好主意。