第212页 - 经纶学典学霸八年级英语上下册【江苏国标】

C

serious

produces/causes

separate

carelessly

reduce

helping

will be punished

richest

digging

to study

will be used

to build/for building

drive (cars) to work/ go to work by car

produce/cause/lead to serious air pollution

take some simple steps to make a

big/great difference to

depend on nature's rich resources to live

Cutting down trees is not allowed/It's not allowed to cut down trees