0. go
1. isn't rain
2. are waiting
3. rises
4. boils
5. is boiling
6. is getting
7. go
8. doesn't rain
9. go
17. Let's go out. It isn't raining now.
18. Hurry up! Everybody is waiting for you!
19. The sun rises in the east.
20. Water boils at 100 degrees.
21. The water is boiling. Can you turn it off?
22. I must go now. It is getting late.
23. I usually go to work by car.
24. It doesn't rain very much in the summer.
25. The moon goes round the earth.