We have spent the last one hundred years (1) ____ our environment. In cities, factories and cars pollute the air we breathe, and everything we touch is dusty and (2)_____We spoil the countryside by (3) _______ away our rubbish there, and ruin areas of natural beauty by digging up minerals, such as iron and gold, and fuels such as coal and oil. While some people get rich, (4) ______suffer from poverty, hunger and disease. We must prevent this situation (5) ______getting worse. (6) _____a way to save our planet is an extremely urgent problem for all the inhabitiants of the wold.

We have spent the last one hundred years (1) ____ our environment.