1. They collect household and garden waste to make compost.

2. Would you mind to open the windows?

3. It's difficult to find accomadation at busy  times there.

4. The organization shows us how to protect the environment.

5. Empty cans are brought back to the factory for recycling.

6. She was very sad not to get good marks in the final exams.

7. There is a big, well-known oceanic institute in Nha Trang.

8. Can we travel across the river in this canoe.

9. It is interesting to travel around Viet Nam.

10. The children enjoyed sweets making from chocolate.

Sorry chủ tus mik chỉ làm đc đến câu 10 thui, xin lỗi rất nhiều!

1.make

2.to open

3.busy 

4.to protect

5.recycling

6.not to get

7.oceanic

8.canoe

9.interesting

10.making