Bài 12. Chọn và điền từ thích hợp để hoàn thành câu dưới đây Must don’t have to might should mustn’t shouldn’t 1.You ______ drive on the paverment. It’s illegal. 2. You _______ say that. It’s not nice. 3. I ________ go to work tomorrow because it’s a public holiday. 4. I _________ buy this CD, I’m not sure. 5. You _________ eat more vegetables. They’re good for you. 6. You _________ be 18 before you can buy alcohol. Bài 13. Hoàn thành các câu dưới đây, sử dụng May(not) và might(not). 1.There are some dark clouds in the sky.(may) 2. It’s nine- thirty and Jack feels tired (might) 3. My class start soon, but I’m not sure where the classroom is (may not) 4. Sarah has soem money and she is at a clothing store( might) 5. Kelly and Jenny are friends but they live in different cities. They are both traveling to Washington this summer(may) 6. It’s cold outside, but James isn’t wearing a jacket( might) 7. My brother is at a restaurant and he feels a little hungry( may) 8. I should go to work today, but I feel a little sick( might not) 9. perhaps Susan know the address.(may) 10. It’s possible that Joanna didn’t receive my message( might)