IX/ Dùng từ gợi ý viết lại các câu sau sao cho nghĩa của câu không thay đổi. (10) 1. Keeping the environment clean is very important.- It’s ................................................................................ 2. They will show the time machine to the public when they finish it. - The time machine ....................................... 3. He was delighted to receive his aunt’s letter.- He was delighted that ..................................................................... 4. Old car tires are recycled to make shoes and sandals.- People ............................................................................. 5. I’m very sad that I wasn’t accepted in that group.- I’m very sad not ...................................................................... 6. It’s three years since I last spoke to her.- I haven’t ............................................................................................ 7. Tam doesn’t type as fast as she used to.- Tam used ........................................................................................... 8. “ Please turn down the radio for me”, said my father.- My father asked ............................................................... 9. Lan will be fifteen next week. - It is Lan’s ..................................................................................................... 10. How long is it since you used the pen?- When ..............................................................................................?

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