Can’t you see the _______/saIn/ You can’t swim here.
Where _________ he come from— He is from Guangdong.
I rang you at about ten, but there was no reply.— Oh, that was probably ____ I was seeing the doctor
He has been _______ for three weeks. We’d better findanother person to fill his place.
when you want to talk to your teacher ,youshould _ _first.