— you open the window please? —Yes I can.A. MayB. NeedC. MustD. Can

问题补充：

— you open the window, please?

—Yes, I can.

A. May

B. Need

C. Must

D. Can

答案：

A. May

B. Need

C. Must

(答案→)D. Can

解析：根据回答Yes, I can可知要用can来提问。所以选D.