Please call study center _____ 443-5667 for more information. [ ]

Food safety is important. Rules _____ to stop people from food pollution.

________you like that latest type of car so much，why not buy it?—Well，I can’t afford so expensive a car. It is worth

Yang Lei had ______ unusual experience in Gansu Province. ______ experiencechanged her life.

You’d better _______ a doctor if you _______ well.[ ]