1. Ba said that he was a student then

2. Mary asked Phuong if Ha Long Bay was in the Northern Viet Nam

3. Would you mind helping me to put the chairs away

4. Old car tires are recycled to make shoes and sandal

5. The boy who is playing chess with you is my uncle

6. It's important to keep the environment clean

7. Your bicycle will be repaired by my father tomorrow

8. The clothes are washed by my mother everyday

9. Would you mind if I turned off the television

10. Do you mind going there with me 

1. Ba said that he was a student then. (Cấu trúc: S + said + that + S + V(lùi thì))

2. Mary asked Phuong if Ha Long Bay was in the Northern Viet Nam. (Cấu trúc: S + asked + O + if + S + V(lùi thì))

3. Would you mind helping me to put the chairs away.

4. Old car tires are recycled to make shoes and sandals. (Câu bị động: S + be + V3/ed + (by+O))

5. The boy who playing chess with you is my uncle.(Câu này chỉ đc dùng một động từ to be thôi nha).

6. It's important to keep the environment clean. ( Cấu trúc: It is + adj + to V + O)

7. Your bicycle will be repaired by my father tomorrow. (Câu bị động: S + will + be + V3/ed + (by+O))

8. The clothes are washed by my mother everyday. (Câu bị động: S + be + V3/ed + (by+O))

9. Would you mind if I turned off the television. (Câu điều kiện loại 2)

10. Do you mind going there with me.

Chúc bạn học tốt. Xin 5 sao và CTLHN.