how to do and what to go 谓语用is 还是are

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 what to do 与how to do 的区别I don't know ____________.A.what to say or do B.what to say and to do C.how to say or do D.how to say and to do I don’t know __.A.what to say or do B.what to say and to do C.how to say and to do选谁?为什么 I’m very upset and don’t know （）A what to do B how to do How and what can I do I have been have no choice .I don't know how to say i lost my bike,and i really don't know _____.A what should i do B what to do C how shall i do I really don't know____nexta.how to do b.what to doc.what to do it I failed my test.I am very upset and don't know 这是前提1.how to do it2.what to do it3.how to do 4.what i should i do 最好选哪个 i don't know ()to do.填what还是how He doesn't know next 1how to do 2what to do next 3how to do it I don't know___.A.what to do it B.what do C.have to do it D.how do i lost my friend's bike and i really don't know_ a.what to do b.how to do 个人认为选b答案是什么求解 People don't know_______A who are we B what you to do C how to do D what to do What to do用法I really don't know____about it.A.what to do B.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 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 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 what to do和how to do She feels sad.She doesn't koow ______________.A what to do B how to do it