Điền từ còn thiếu vào chỗ trống
1. Carlos loves animals. He is training to be a ......
2. These birds are so ....that they will eat from your hand
3. my dog's.......becomes very thick in winter
4. cows used their ....to keep away flies.
5. It's good for children to look after a....
6. We..... the birds with nuts and seeds
7. A bird's....help to keep it dry when it rains
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Sinh Học lớp 12
