1. They enjoyed staying on a farm during their summer vacation

enjoy Ving: tận hưởng làm gì

2. We will live a happier and healthier life if we keep our environment clean

Câu điều kiện loại 1: If + S + V(s/es), S + will + Vinf

3. We shouldn't throw the rubbish on the street

Shouldn't Vinf: không nên làm gì

4. The students in our school often collect waste paper for their mini project

Often => hiện tại đơn

5. My aunt has a small garden and she grows flowers and vegetables

Chủ ngữ số ít => chia động từ