--- Whose volleyball is it?--- It ________ be Carla’s. She doesn’t like volleyball.
-____ day it is! ---Let’s go out and enjoy the sunshine.
I’ll go to visit my aunt in England ____ the summer holidays start.
My friend is coming to visit us.I’m looking forward ____ him.
The policeman doesn’t think teenagers ____ drive.
—Do you know who the pen ___? –Sorry,I don’t know.