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.
_My mother used to work at a restaurant 3 years ago but now she doesn’t.
2. He was the president of Student Union but now he isn’t.
_He used to be 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.
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4. My husband didn’t do housework but now he does.( phủ định)
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5. Children didn’t play with high-tech devices at an early age but now they do.
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6. The students didn’t go to school by public transportation but now they do.
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7. My city was a tourist destination but now it isn’t.
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8. Traffic jam didn’t happen when I was small but it happens now.
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giúp mình từ câu 3 với 
There used to be many tree-lined streets in my hometown but now there is none of them.
My husband did not use to do housework but now he does.
Children did not use to play with hightech devices at an early age but now they do.
The student did not use to go to school ...
My city used to be a tourist destination but ....
Traffic jam did not use to happen when I ...
