- Speak louder pleaseA. No I can’t.B. O.K. I will.C. That’s all right.D. No thank yo

问题补充：

- Speak louder, please.

-

A. No, I can’t.

B. O.K. I will.

C. That’s all right.

D. No, thank you.

答案：

A. No, I can’t.

(答案→)B. O.K. I will.

C. That’s all right.

D. No, thank you.

解析：四个选项分别表示不,我不能/好吧我会的/不要紧和不谢谢你,根据英语语言习惯选B,请声音大点._好吧！我会的。