Bài 13: Viết lại câu, sử dụng cấu trúc “used to”. 1. My mother worked at a restaurant 3 years ago but now she doesn’t. ______________________________________________________________ 2. He was the president of Student Union but now he isn’t. ______________________________________________________________ 3. There were many tree-lined streets in my hometown but now there is none of them. ______________________________________________________________ 4. My husband didn’t do housework but now he does. ______________________________________________________________ 5. Children didn’t play with high-tech devices at an early age but now they do. ______________________________________________________________ 6. The students didn’t go to school by public transportation but now they do. ______________________________________________________________ 7. My city was a tourist destination but now it isn’t. ______________________________________________________________ 8. Traffic jam didn’t happen when I was small but it happens now. ______________________________________________________________