Here are the correct verb forms for the sentences provided:

1. The sun **sets** in the West.
2. It usually **rains** in the summer.
3. They **are building** the buildings at the moment.
4. Bees **make** honey.
5. The earth **gets** hotter on the scale now.
6. Rivers usually **flow** to the sea.
7. Don’t worry, I **am giving** him your message when I **see** him.
8. Look! Jane (play) **is playing** the guitar. Hurry up! The bus (come) **is coming** to her at present.
9. How often **does** she (go) **fishing**?
10. She (go) **goes** once a year.
11. Your friends (be) **are** students?
12. Yes, they (be) **are** in the park at the moment.
13. No, they aren’t. They (learn) **are learning** to play the piano.
14. No, you (go) **don’t go** to school on Sundays? – Yes, I do.
15. My mother (cook) **cooks** a meal now. She (cook) **cooks** every day.
16. What **is** your mother (do) **doing** at this time?
17. She (make) **makes** a dress.
18. **Does** she often (go) **go** to the cinema every weekend?
19. **Do** they (go) **go** to the church on Sundays?
20. The students (not be) **are not** in class at present.

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