l really don,t know _____ and _____.A.What to do,How to do B.what to do it ,how to do it

问题描述:

l really don,t know _____ and _____.A.What to do,How to do B.what to do it ,how to do it
C.what to do it ,How to do D.What wo do,how to do it

D 这可以理解为一种固定搭配这绝对固定?是的不论是do还是deal