4. There are still a lot of old buildings r        in the town.

3. Some animals are good with their k         .

2. Don't eat too much o       for meals,because it's bad for our health.

1. Pandas are e       animals,so we should protect them.

 8. stop putting rubbish into.      

7. or so       

6. tell sb. about sth.       

5. 每两年      

4. 处于危险中        

3. 海洋生物