Tìm và sửa lỗi sai trong các câu sau

tìm và sửa lỗi sai
1. He be not my brother
2. Is these your notebooks ?
3. Who is they ? They are Ba and Bao
4. Where is these boys from ?
5. Those is my friends
6 . Which class be Lan in?
7. What grade do they in ?
8. Our house are very big
9. Their school am new
10. Lan and I am not workers.