1. I suggest banana leaves wrapping food instead of plastic bags.

2. Public buses are suggested keeping our environment cleaner.

3. You have to pay much per month if you don't save electricity.

4. Sheets with single printed page are nominated for drafting.

5. Food is suggested preparing carefully before turning on the stove.

6. Solar energy can be saved on cloud days.

7. Since the weather was very bad, we decided to postpone our camping.

8. He suggested we not keep solid waste with food waste.

9. If we recycle, we will save natural resources.

10. Since the weather was bad, we couldn't go to school on time yesterday.

11. They suggested that Phong Nha cave should be elected to be one of the world wonders.

12. Lan had to look after her little sister because of her mother's sickness.

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Chúc bạn học tốt !