Here are the completed sentences with the correct form of the words provided:

1. I'm a **construction** worker. I build offices and houses.
2. *Tet* is the biggest **traditional** holiday in Vietnam.
3. During *Tet*, children wear new clothes and get **lucky** money.
4. On the weekend my father does the **gardening**.
5. It's **interesting** to make pretty things from paper.
6. They think the **criminal** stole the car because he needs money.

Let me know if you need further assistance!