I know what to do it可以吗

I know what to do it可以吗 I DO not know ( ) it today A What to do B how to do C to do what I don't know ( ).A.what to do it B.how to do it C.what to do D.to do what i don't know how to do it.为何要加It?而what to do 后则不加it? I really don't know ( ).A.what to do the next B.what to do it next C.how to do the nextD.what to do next 找错----Sorry,I don't know what to do it只能改don't know to it I don't know （）.can you help A.what to do it.I don't know （）.can you help A.what to do it.B.how to do it C.how to do D.to do how i don't know what to do I know what to do for it's too late for school,i don't know---------.A.what to do B how to do it.it's too late for school,i don't know---------.A.what to do B how to do it. I donot know --------to do it.------疑问词 I don't know ------it today.1.what to do 2.how to do 3.to do what 4.to do how 翻译You know I love you? You do not know what it is? I also would like to. My Angel I don't know how to deal with it?是=I don't know what to do with it还是=I don't know what to do it with? I don't know what to do,it's because you,so have to apologize for my fault.Although I were not mean to do it ,But I know what I I really don't know ______ next,please give me some advice.A what to do it B how to doC what to do D when to do I really don't know -----with it.A .what to do B.how to do 选哪个?为什么?