1.I always have lunch at twelve.对划线部分提问（at twelve）；2.There isn't anyone in the room.改为肯定句；3.We usually have noodles for supper.划线部分提问（noodles）;4.I usually do morning exercise at 8:00.改为一般疑问句;5.I don't have any time to play football.改为同义句.