Here are the corrected tenses from the text you provided:

II/ Correct tenses
1. **came** as soon as our work is finished.
2. **has worked** very hard lately.
3. I **finished** the book before my next birthday.
4. When he came, I **was listening** to the radio.
5. When you **did** (do) we phone yesterday?
6. When I saw him, he **was talking** to an old man.
7. When she was a student, she **did not have** many friends.
8. I am not used to **driving** on the left.
9. He looks very funny. I can’t help **laughing**.
10. He **has slept** for 10 hours! You must wake him.

III/ Word forms
1. The heavy rain made the steps very **slippery**.
2. She devoted all her life to **writing**.
3. I’ll have Tom repair our electric **cooker**.
4. Please don’t make a **noise**.
5. Mr. Green works in this factory as a shop **keeper**.
6. This lake is one of the **entertainments**.
7. Butter is one of the **products** of milk.
8. He often writes stories. He is a **writer**.
9. These flowers look **natural**.
10. He is a famous **actor** in this country.

Feel free to ask if you need more help!