Các bạn giải nhanh giúp mik nhé. Mình cảm ơn rất nhiều
Turn these sentences into passive voice
1. We must use water sparingly
2. We should clean the beaches
3. They could use animals as medicine.
4. They were holding a flower fair at that moment last year
5. People were painting all tress a long the streets at this time two year ago.
6. They were not using this computer at 8.pm yesterday.
7. Was she doing her home work at this time yesterday morning.
8. She is watering vetgetables in the garden now.
9. We are checking our exercises carefully at the present.
10. My mother is preparing dinner in the kitchen at present.