The boy didn't know___.A:what to do it B:what to do C:when t
The boy didn't know___.A:what to do it B:what to do C:when t
I don't know___.A.what to do it B.what do C.have to do it D.
They didn't know _____ to do A who B when C what D where
my mother didn't,know《C what to do it
I really don`t know_____ A.what to do it B.how to do C.what
I don't know ( ).A.what to do it B.how to do it C.what to do
20. He doesn't know ______ A. when to do B. what to do C. ho
He doesn't know__next.A,how to do;B,what to do it;C,where to
he didn't know_____ when the house caught fire.A.what to do
Do you know___?A.what is tom from B.what Tom is C.have to
Do you know___?A.What happened to him :B.What is the matter
Do you know to do it in the lab tomorrow?a:what b:how c:when