----- Nội dung dịch tự động từ ảnh -----
Bài tập 7. Điền vào chỗ trống với các giới từ đúng.

1. My sister is ______________ the Red Cross.
2. We donate books ______________ an orphanage every year.
3. We can exchange dead batteries ______________ a plant.
4. Last month, we gave gifts ______________ old people.
5. My family grew vegetables ______________ a primary school last spring.
6. That policeman is very kind. He is taking care ______________ thousands of homeless dogs and cats.
7. I had a gap year, so I volunteered ______________ teach art ______________ children in my neighbourhood.
8. Nancy and her friends are picking ______________ rubbish ______________ the beach now.
9. They turn old plastic bottles ______________ hundreds of pretty vases and toys.
10. We spend a day cleaning ______________ dirty streets every week.