how to do it和 what to do是什么来的?是不是宾语从句改为简单句?这里的DO是泛指还是特指

what to do和how to do She feels sad.She doesn't koow ______________.A what to do B how to do it how to do it和what to do it的区别how to do it，what to do 的区别 l really don,t know _____ and _____.A.What to do,How to do B.what to do it ,how to do itC.what to do it ,How to do D.What wo do,how to do it I really don't know____nexta.how to do b.what to doc.what to do it I don't know___.A.what to do it B.what do C.have to do it D.how do She dosn't know ( ) A what she can do it B what to do it C how to do D how to do it He doesn't know next 1how to do 2what to do next 3how to do it I don't know_____next.I am really nervous.A.how to do B.how to do it C.what to do D.what to do it What to do用法I really don't know____about it.A.what to do B.how to do Mary feally doesn't know __about it.A.what to do B.how to do They said they hadn't decided__________?A.how to do B.what to do C.what to do it D.how do it 说理由哦 We can't fix this machine well.Can you show us______?A how to do B what to do C how to do it D what do it 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 （）.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 really don't know ___about it.A.what to do ;B.how to do 为什么正确答案是A呢?请大家帮我详细分析下.宾语从句不是what to do和how to do I don't know ------it today.1.what to do 2.how to do 3.to do what 4.to do how I's too late for school.I don't know___________A.what to do that B.how to do C.what to do D.How to do it I don't know What to do 和 I don't know How to do it?哪个句子是正确的呢?