I don’t know . Can you help me?A. how to do itB. how to doC. what to do itD. to do what

问题补充：

I don’t know . Can you help me?

A. how to do it

B. how to do

C. what to do it

D. to do what

答案：

(答案→)A. how to do it

B. how to do

C. what to do it

D. to do what

解析：句意：我不知道该怎么做。你能帮我吗？how to do it如何做它，what to do表示做什么，故选A