----- Nội dung dịch tự động từ ảnh ----- Exercise 9. Find out and correct the mistakes. 1. Our summer vacation last for about three months. в с 2. How much hours a day do you do your homework? в A D A C D 3. Our cows produce little milk than Mr. Hung's. A B C D в 4. I think we have less vacations than America pupils. с D B C A 5. We didn't see her for two weeks. вс D 6. I have collected stamps when I was a little boy. в с 7. They saw a real elephant when they went to Ban Don next year. в 8. She needs two kilos of meats and some onions. C 9. My brother never enjoys classical music and I don't, too. A A D A B D A B D A B C D 10. The concert show was quite different than what I thought. A B C D