A B
1. It’s necessary that a. so we should save them.
2. Natural resources are limited b.we have to solve.
3. If people use public transport, c.we should protect environment.
4. I’m disapoited that d. people have spoiled this area.
5. Poluted air is one of the many e. there will be less polution.
problems
Loga
Sinh Học lớp 12
