问题
填空题
| 选词填空。 | |
2. There _____ to be a lot of manatees. 3. Some of the swamps have become _____. 4. I feel that zoos _____ clean and safe places for _____ animals to live and help to _____ the public about _____ for them. |
答案
1. save 2. used 3. polluted 4. provide, endangered, educate, caring