III. Viết lại theo câu điếu kiện loại I. (Rewrite sentences in conditional sentences type I.) VÍ DỤ: I have free time. I read books. → If I have free time, I will read books. 1. We use bicycles. We save our world. 2. She doesn’t throw garbage on the street. She helps the dustman. 3. We walk in the park. It doesn’t rain. 4. You study hard. You pass the exams. 5. We are healthier. People stop polluting the air. IV. Hoàn thành câu với can, can’t, will/won’t be able to, could, couldn’t, might, mightn’t. (Complete the sentences with can, can’t, will/won’t be able to, could, couldn’t, might, mightn’t.) 1. People.......protect the environment in the near future. 2. ..........you swim? 3. When I was young, I..........play the guitar because it was too difficult for me. 4. At the end of this century, robots............replace workers in factories. 5. I won’t drive in a rain because it...............be safe. 6. My mother is cooking, so she.........answer the phone. 7. He............ride a horse when he was a baby. 8. I don’t have a bike now. I.......go riding until I have one. 9. She............cycle when she was five. 10. The city is modern, but I...............live in the countryside for the rest of my life. V. Sắp các từ sau vào đúng cột dựa vào các âm /æ/, /a:/, /ɔi/ và /aʊ/. (Put the following worlds into the correct columns according to the sounds /æ/, /a:/, /ɔi/ và /aʊ/.) alarm, sound, sad, around, enjoy, power, hard, boy, south, avoid, thousand, father, noise, fat, join, round, mouth, toy, about, hat, mark, cat, past, panda, band, shower, joy, bar, mat, car, boil, card, far, voice, rat, bag, toilet, garden, flower, happy