1. The music lessons must be written in ink.
2. Lucycles can be used for short journey in this city.
3. UFOs have been seen several times recently.
4. We aren't allowed to walk on the grass.
5. The software can be downloaded from the internet.
6. A lot of mountains may be found on Mars.
7. Tuan was sent to a high quality school by his parents last year.
8. A high-warming party is going to be held by Tuan this weekend.
9. A factory are being built to recycle waste paper in this city.
10. Were mails being checked when the light went out?
Chúc bạn học tốt!
