A teacher of English and class teacher _______ us something about volunteer workers.
It was not until midnight they reached the camp site.
This is _______ story I’ve told you about.Isn’t it _______ interesting one?
This is the first time that I _____ the summer palace.
—Excuse me, could you tell me where the post office is?—__________, but I’m a stranger here.
He may not even drink water at night, _______ swallowing insects possibly floating on the surface.