—I think the man over there must be Bob.—It ______ be him. He has gone to Paris.
It’s ten o’clock. The children are ___ a good time.
My father works in a ________.His students like him very much.
Jim can’t go to school ___ his parents have no money.
___ knows the way to the hospital so we have to ask the policeman for help.
____! We don’t have much time. A Come out B Come along C Come on D Come over