Rewrite the sentence without changing the meaning 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 …………………………………………………………………….?