UNIT 9 : TREATMENT SYSTEMS FOR AIR 5) My brother studied engineering at the university. He has a in chemical engineering because he studied in a special program for it, 6) Name one between life in Canada and life in the United States. These two countries are not very different. 7) If you study English for several years, you will be able to speak it well. This can help you find a good job. D. -EVER Several words in English end in the suffix -ever. Look at these words and their meanings. Then choose the best word for each.
