hệ mặt trời gồm có mặt trời ở trung tâm và 8 thiên thể quay quanh mặt trời gọi là các hành tinh , đó là thủy tinh ,kim tinh , trái đất , hỏa tinh, mộc tinh, thổ tinh, thiên vương tinh và hải vương tinh . gọi S là tập các hành tinh của hệ mặt trời . hãy viết tập S bằng cách liệt kê các phần tử của S

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Exercise 9: Give the correct form of the verbs in brackets: used to + V or simple past. (2) 1. I (not play) ...................................computer games when I was a child, but now I (play) ................................... a lot of games in the evening. 2. Mike (not smoke) ...................................before going to the army. 3. There (be) ...................................three parks in our village, but now there (be) ................................... only one. 4. Murat (like) .................................. cheeseburgers, but now he (eat) .................................. healthy food. 5. She (not cook) ...................................before she got married, but now she (cook) ................................... everything. 6. Alex (not have) .............................a mobile phone, but now he (send) .............................. text messages easily. 7. When I was single, I (have) ...................................big parties in my house, but now I (watch) ................................... TV in the evenings. 8. When I was in Vietnam, I (watch) ................................... football matches at the stadium. Now I (watch) ...................................on TV every weekend. 9. A: you (drink) ........................... a glass of milk every morning when you were a child? B: Yes, I did, but now I (drink) ...................................a cup of coffee every morning. 10. My sister (love) ............................... classical music, but she (hate) .............................. it when she was younger.