1, Sai: used. Sửa: used → use
2, Sai: is. Sửa: is → was
3, Sai: at. Sửa : at→ from
4, Sai: get. Sửa: get→ from
5, Sai: crying. Sưa: crying → cry
6, Sai: was taking. Sửa: was taking → took
7, Sai: were spending. Sửa: were spending → spent
8, Sai: listened. Sửa listened → was listening
9, Sai: was starting. Sửa: was starting → started
10, Không có lỗi sai