Sure! Here are the correct forms of the verbs based on the sentences provided:

1. When **did** you **start** your hobby? I **started** it last year.
2. If she **studies** hard, she **will get** good marks.
3. I just **watched** the film since my father **came** back.
4. How **does** your father **go** to work every day?
5. She **prefers** watching TV to reading books.
6. If Lan **does not listen** to her parents, she **will not get** into university.
7. **Does** Phong **love** a cup of coffee now?
8. Minh and I **are not** doctors.

Let me know if you need any further help!