1. How many times have you ever been to Hanoi?
2. Last night I couldn’t sleep because of the loud noise from my next-door neighbor.
3. She has studied English since she was five years old.
4. Many years ago, most of the Vietnamese farmers had to live in houses made of straw and mud.(câu này có hai lỗi sai :>> )
5. The youth with new farming methods have helped the farmers in my village to grow cash crops for export.