I know what to do it可以吗

I know what to do it可以吗 找错----Sorry,I don't know what to do it 改错：I don't know what to do it. i donnot know what to do with it do you know how to deal wit I don't know ( ).A.what to do it B.how to do it C.what to do i do not know how to do it、what to do I really don't know -----with it.A .what to do B.how to do 选 I don't know "What to do 和 I don't know "How to do it"?哪个句子是 I don't know ______.A what to do with it B what to do it wit I DO not know ( ) it today A What to do B how to do C to do i don't know how to do it.为何要加It?而what to do 后则不加it? 翻译英文 I know a friend is what you do to me do it!your busines