填空题
- A．make new materials
- B．preserve wetland and animals
- C．have clean air
- D．have clean water
- E．collect cigarette butts
- F．collect disposed oil
填空题
Joying placed the buckets at all public-access areas to 1.
填空题
People are grateful to Carter Dunham for his efforts to 1.
填空题
Disposed oil and many other items can be reused to 1.
填空题
Ryan, with the help of others, is fulfilling his dream of help African people to 1.