The man in black is _______ my lifeguard. He is also my close friend.
. It _____ Mary and Tom that often helped me at school.
I wonder ____ you were doing last night.
It musk be he that has stolen Mr. Smith’s purse. __________?
—Do you have the new Chinese-English Dictionary? —Yes, but no more than one copy Would you like to take ____?
Meeting my uncle after all these years was an unforgettable moment, __ I will always treasure.