The cleaners should not be looked down on and they are angels of the city _________.
______ on the light, Tony. It is too dark in the room.
He kept writing the book _____ he was in great pain.
–Sam, could you please turn down the radio? Your sister _____ in her room. --OK, Mum.
David’s dream is to go to the west of China and ______ an early childhood school there.
—Don’t throw litter around. It _______ terrible in summer. --Sorry, I won’t.