Make questions for the underlined words. I recycled cans and bottles to help the environment.

What did you recycle to help the environment?

Từ gạch chân: cans and bottles (cái gì?) → Dùng từ để hỏi What

Cấu trúc: What + did + S + V-nguyên thể ...?

→ What did you recycle to help the environment?

Giữ nguyên cụm chỉ mục đích: to help the environment.

Dịch: Bạn đã tái chế những gì để bảo vệ môi trường?