1． A．A waiter. B．A conductor.
C．A booking clerk. D．A shop assistant.
2． A．A boss and a salesgirl. B．A teacher and his student.
C．A professor and his assistant. D．An assistant and his customer.
3． A．He didn’t sleep well last night. B．He is going to play a game.
C．He is lying in bed. D．He had a sleep problem.
