III. Fill in each blank with "should" or "shouldn't'. 1. The students make so much noise. 2. The film is interesting. You go and see it. 3. Tom drive carefully. The traffic is very heavy. 4. You smoke so much. 5. You give up smoking. 6. You spend more time on your homework. 7. The English girl wants to live in Viet Nam. She learn Vietnamese. 8. He drink so much coffee before bedtime. 9. Tom has a bad toothache. He go to the dentist's. 10. You go to bed so late every night. IV. Rewrite these sentences, using must, mustn’t, should, shouldn’t. 1. Parking in this street is prohibited. You __________________________________________________________ 2. It’s not a good idea to swim immediately after a meal. You __________________________________________________________ 3. It’s really important to take this medicine three times a day. You __________________________________________________________ 4. It’s a good idea to listen to the weather forecast before going camping. You __________________________________________________________ 5. It’s a good for you to take exercise every day. You __________________________________________________________ 6. It’s very important not to drink the water there. It will make you ill. You __________________________________________________________ 7. It’s not good to eat lots of sweets. You __________________________________________________________ 8. It’s against the rules to use your mobile phone in class. You