1. healthy (adj): khỏe mạnh (stay healthy: luôn khỏe mạnh
2. long (adj): dài (How + adj + tobe + noun?)
3. sickness (n): bệnh (Because of + N/V_ing)
4. unpleasant (adj): khó chịu (feel + adj)
5. appointment (n): cuộc hẹn (mạo từ + N)
`II`.
6. Ba Be lake is the largest lake in Vietnam (Câu 1)
7. It's in Vietnam (Câu 1)
8. You can drive through the National Park to visit small village of Tay Minority (Câu 3)
9. You can visit some caves and the Dau Dang Waterfall during the boat trip on Ba Be lake (Câu 7)
10. We can watch with their daily life