简要施工方案应填写（）。

A.施工费用

B.技术安全措施

C.施工人数

D.施工地点

Speaker A: Do you mind if I sit down here
Speaker B: （）。

A. Of course. Do sit down, please.

B. Not at all. There’s plenty of room.

C. Never mind. I’d like to have some companion.

D. Sure, I’d like to have somebody to talk to.