What to do用法I really don't know____about it.A.what to do B.how to do

问题描述:

What to do用法
I really don't know____about it.
A.what to do B.how to do

how是“怎么”,后要加一个宾语“it”,what是“什么”,后不用加宾语.所以这题的答案是B