viết lại câu sao cho nghĩa ko thay đổi :
1. I would like you to help me put the chair away. (Do you mind...)
2. I've never eaten this kind of cake. (It's...)
3. Keeping the enviroment clean is very important. ( It's.....)
4. People recycle old car tires to make shoes and sandals. ( Old car tires.....)
5. It's three years since I last spoke to her. ( I haven't.....)
6. Tam doesn't type as fast as she used to. (Tam used......)
7. How long is it since you used the car? (When.....)
8. We started living here 15 years ago.(We have.....)