Sure! Here are the correct forms of the verbs in brackets for section III, as well as the identified errors for section IV.

### III. Give the correct forms of the verbs in the brackets
1. She often **goes** to the market with her mother every weekend. Tomorrow, she **will visit** Hue.
2. Lan **loves** cartoons, but she says she **will not continue** this hobby in the future.
3. Have you **finished** your homework yet?

### IV. Find out one error/mistake (from A, B, C or D) in each sentence below
1. How often **is it** from your school **to** the countryside?
**Error:** A (should be "does it take").

2. The exercise is **most** difficult **than** that one.
**Error:** C (should be "more difficult than").

3. We find **eating** junk food **is** healthy **because** it will make you gain weight quickly.
**Error:** B (should be "unhealthy" instead of "is healthy").

4. **Has** Tom and his friend **known** about that news?
**Error:** B (should be "Have Tom and his friend known...").

5. **Arranging** flowers and cooking **special** food are her **hobby**.
**Error:** D (should be "hobbies" instead of "hobby").

Feel free to ask if you need any further assistance!