Dưới đây là danh sách điền từ thích hợp vào chỗ trống:

6. I clean my **teeth** three times a day.
7. The **students** are doing the exercise right now.
8. The **fish** I bought is in the fridge.
9. They are sending some **men** to fix the roof.
10. Most **housewives** work more than ten hours a day at home.
11. Study the next three **chapters**.
12. Can you recommend some good **books**?
13. I had two **teeth** pulled out the other day.
14. You can always hear **echoes** in this mountain.
15. They are proud of their **son-in-law**.

Nếu cần thêm trợ giúp, hãy cho tôi biết!