THE WOMAN PAYS ME A FAIR SALARY. I WORK FOR HER. (COMBINE USING A P...

3. The woman pays me a fair salary. I work for her. (combine using a preposition + a relative pronoun)

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IV. Reading:

A. Read the passage carefully and choose the best option to fill in each blank: (1.25 p)

The growth of cities and the (1) ………of industries in the nineteenth and twentieth centuries brought

increasing pollution of the rivers and waterways. As a consequence, water purification treatments have become more

and more important as a means of providing safe water.

The most widely used method of water purification is water filtration plants (2)…....remove impurities from the

water by passing it (3)…...sand, and, in some systems, treating the water with elements such as chlorine.

Filtration systems began in the Western Europe. The first treatment plants were built in 1829 to purify the River

Thames in England.

In 1854, the (4) ……….for water treatment plants became recognized and the need for pure water a matter of public

concern when London cholera epidemic was traced to public well. Most cities, first in England, then in the US and later

throughout the world, developed filtration plants to avoid cholera outbreaks that frequently ravaged

(5) ………..communities.