You can buy socks _______ girls _______ only five dollars each.
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.
—Mum, must I stay there the whole day?--No, you ______. You ______ come back after lunch, if you like.