mình cần gấp ạ Exercise 3. Match an if-clause (1-5) with a suitable main clause (a-e). Column A Matching Column B 1. If I were you, 1 - a. what would happen? 2. If Lan wasn’t ill, 2 - b. I'd look for a new place to live. 3. If there were fewer cars on the road, 3 - c. she would join our tree planting activity. 4. If people really cared about the environment, 4 - d. there would be less pollution. 5. If there was no fresh water in the world, 5 - e. they wouldn’t dump waste into the lake. Exercise 4. Put the verbs in brackets into the correct form. 1. If you (be) ________________the president, what ________________ you (do) ________________to help the environment? 2. They get sick so often. If they (exercise) ________________more, they (be) ________________  healthier. 3. If I (have) ________________one million US dollars, I (build) ________________more parks in our city. 4. Ngoc’s mother is unhappy. If Ngoc (tidy) ________________her room every day, her mother (not be) ________________so upset. 5. There isn’t a garden at our house. If there (be) ________________, we (grow) ________________ vegetables. Exercise 5. Write a conditional sentence type 2 for each situation, as in the example. Example: People throw rubbish in the street. The street doesn’t look attractive. → If people didn’t throw rubbish in the street, it would look attractive. 1. There are so many billboards in our city. People cannot enjoy the view. ________________________________________________________________________ 2. There is so much light in the city at night. We cannot see the stars clearly. ________________________________________________________________________ 3. We turn on the heater all the time. We have to pay three million dong for electricity a month. ________________________________________________________________________ 4. The karaoke bar makes so much noise almost every night. The residents complain to its owner. ________________________________________________________________________ 5. She has a headache after work every day. She works in a noisy office. ________________________________________________________________________