1. Remote control is used to operate TV.

2. The generator is operated by steam.

3. I was angry because a fly was spinning around me.

4. Smoke from many factories is polluting the air.

5. Wind is not reliable because it does not blow all the time.

6. We learned that water is a renewable energy in a book.

7. The phone is relatively cheap and useful.

8. Many labs use graphs because they show dramatic changes.

9. The methods to produce energy is various.

10. A nail is stuck between desks. (틀린것)

11. There is a disadvantage that we can't study at Canada Beavers on weekends. (틀린것)

12. Unfortybatekt, we ciykdn't see Mark teacher on weekends.

13. Too many radioactive things are harmful to health.

14. Beverage is replaced by water in school.

15. It is important to take in right amount of water a day. (틀린것)

16. Brandon teacher requires a set of 3 prints for homework. (틀린것)

17. I hope that there is an intelligent robot at my home.

18. When Judy called Exo, they turned around and smiled.