Exercise 8. Match a line in A with a line in B

A	В
Improve	Pesticides
Road-building	Electricity
Industrial	Manufactures
Static	Sprays
Chemical	Environmental conditions
Harm fi.il	Materials
Automobile	Smokestacks

Exercise 9. Put the verbs in brackets into correct form.

Because each of us probably (to use) the green spaces contained in the areas in which we (to live), we also (to need) to help to maintain them. This (to mean) limiting our impact as much as possible: not littering, refraining from cutting down trees or bushes, and generally acting respectfully when we (to enjoy) our time in the park. We can also (to do) our part to maintain these areas by being examples to others for how to act when we (to be) in the park. Furthermore, when the opportunity (to arise) we should use our voices to express concern for the preservation and maintenance of these areas when threats of overdevelopment (to pose). Several different approaches can (to use) to control pollution. Waste products can (to save and use) again.

Exercise 10. Put prepositions into the gaps.

Green spaces are important______ a number___ reasons. One the

Most obvious reasons ___ green spaces such as city parks is their aesthetic value; these places help to beautify our cities and make them more pleasant

Places to live_. Without green spaces our lives become much more