If I ____ any litter on the beach, I'll pick it up Unless we use alternative forms of energy, we ____ more air pollution If people didn't ____ so much plastic, there wouldn't be so much waste If I ____ a bike, I would use it to go to school. The waterfall ____ more interesting to look at, if it was raining. Many animals ____ become endangered, unless we take care of them. It ____ the planet, if we stop using so much plastic.

FIRST vs SECOND CONDITIONAL

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