I don't know______________ at the weekendA.what to do B.how to do C.what will I do请问选哪个?

I don't know______________ at the weekendA.what to do B.how to do C.what will I do请问选哪个?
I don't know______________ at the weekend
A.what to do B.how to do C.what will I do
请问选哪个?

I don't know______________ at the weekendA.what to do B.how to do C.what will I do请问选哪个?
A
what to do是表示做什么,句子后面要加内容,而在这里,what就是内容!
如果选B：how to do 那么句子后面就没有内容了.
如果选D,应该用陈述句语序来回答

选A
我不知道周末做什么.

我觉得选A
what to do 固定用法吧

A

A