how to do 和what to do how about 和what about他们的区别是什么,顺便问下about后是加doing还是do

I want to learn______ a.what to do with it b.how to do c.what to do it d.to do 写出原因 用what和howI want to learn______ a.what to do with it b.how to do c.what to do it d.to do 写出原因 用what和how分别怎么问 how to do和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 how to do it和what to do it的区别how to do it，what to do 的区别 the teacher told us___and___A.What to do,how to do B.what do,how do it C.what to do,how to do it D.what to do it,how to do it WHAT TO DO=HOW TO DO we do not know______.a:how to do b:which to do c:what to do d:where to do how do you what to 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 Nobody told us___A.what to do it B.how to do C.where to do D.when to do it Do you have an idea about________?A. what to do a survey B. how to do C. how to do a survey D. what to do it be adj what/how to do 句型be adj what/how to do 和 do what/how to do 一样么 就是系表后不用带介词? People don't know_______A who are we B what you to do C how to do D what to do Signs tell people what to do and___A.how to do B.what not to do C.where to do D.when to do Have you decided _____the problem?A.what to do B.how to do with C.what to do with D.how to do 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 I don't know___.A.what to do it B.what do C.have to do it D.how do