Dưới đây là các lỗi sai và cách sửa đúng cho các câu trong đoạn:

1. **Lỗi:** give often us a lot of homework.
**Sửa:** Our teacher doesn’t **often give** us a lot of homework.

2. **Lỗi:** sometimes is sad.
**Sửa:** David **is sometimes** sad because he misses his family.

3. **Lỗi:** write usually essays.
**Sửa:** Do you **usually write** essays in your English class?

4. **Lỗi:** late for work never.
**Sửa:** She is never late for work.

5. **Lỗi:** buy always new clothes.
**Sửa:** The girls **always buy** new clothes at Christmas.