1) It... (be) good for the environment if people...... (recycle) glass bottles. a) will be, will recycle b) is, recycles c) is, recycle d) will is, recycle 2) Water ..... (boil) if you .... (heat) it to 100ºC. a) boil, heat b) boils, heats c) boil, heats d) boils, heat 3) Matthew .... (feel) terrible if he.... (not sleep). a) feel, doesn't sleep b) feels, don't sleep c) feels, doesn't sleep d) feel, don't sleep 4) If we ..... (pollute) rivers, we ..... (hurt)  a) pollute, hurts b) pollutes, hurt c) will pollute, will hurt d) pollute, hurt 5) If he... (want) to throw away paper, he .... (have to) put it in the recycle box. a) want, have to b) wants, has to c) want, has to d) wants, have to 6) You .... (reduce) the amount of waste you produce if you .... (swap) your clothes with other people. a) reduce, swap b) reduces, swap c) reduce, swaps d) reduces, swaps

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