Sure! Here are some suitable words/phrases to fill in the blanks:

1. In Vietnam, the **Mid-Autumn Festival** occurs in September when autumn comes.

2. In the family, everyone has his own job. What the youngest child has to do every day is to **take care of the dishes**.

3. He loves living with his grandparents in the countryside because he can **play games** with his friends every day.

4. You cannot find any **tall buildings** in the countryside.

5. **Moving around** is very hard because nomads often move from one place to another. However, it is also interesting.

6. The city children are very excited because it is the first time they have **a picnic** in a garden.

Feel free to adjust any of the phrases to better fit your context!