He does not know() A when to do B when to do C where to do D
He does not know() A when to do B when to do C where to do D
They didn't know _____ to do A who B when C what D where
20. He doesn't know ______ A. when to do B. what to do C. ho
I'm not sure ( )next.A.what to do B.how to do C.when to do D
Do you know when he ___?In ten minutes A gets to B reach C w
The firemen know ______ to do.( ) A.what B.why C.how D.when
Do you know______?A.how to do B .when he will come C.what to
What he said ___ harm to us.A.does B.do C.to do D.doing
I do not know since when accustomed to a person
Do you know to do it in the lab tomorrow?a:what b:how c:when
The work is not easy ______.A.doing B.to do C.do D.does
连词成句 what,do,children,when,they,many,are,in,do,not,know,to,d