li didn't know(what to do)为什么how to do it后要加it,这个却没有?
li didn't know(what to do)为什么how to do it后要加it,这个却没有?
He didn't know what to do about it 为什么填what 不是有it吗?
I didn't know how to do it问题
my mother didn't,know《C what to do it
I don't know ( ).A.what to do it B.how to do it C.what to do
Because he didn't know how to do it,he went to her for help.
Mary feally doesn't know __about it.A.what to do B.how to do
I really don't know -----with it.A .what to do B.how to do 选
i don't know how to do it.为何要加It?而what to do 后则不加it?
He didn't know ____when the house caught fire.A how to do it
I don't know ------it today.1.what to do 2.how to do 3.to do
I don't know "What to do 和 I don't know "How to do it"?哪个句子是