Here are the completed sentences using the given words:

1. They **play games** at Suoi Tien Theme park.
2. They **plant** trees and vegetables with the farmers.
3. You’ll go up **Ba Na Hills** by a cable car.
4. My family often go to **Bai Dinh pagoda** at Tet to pray for health.
5. You can **visit the old buildings** at Hoi An ancient town.
6. My sister goes jogging around **Hoan Kiem lake** every morning.

### II. Writing:
1. I went to the beach.
2. I went with my friends.
3. I saw the beautiful sea and sand.
4. We played beach volleyball and swam.
5. I liked it because it was relaxing and fun.