If you have a shower instead of a bath, _____________________________. ...

★ First Conditional Sentence

If you have a shower instead of a bath, _____________________________.

A. you save a lot of water

B. you had saved a lot of water

C. you’ll save a lot of water

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If we keep polluting our planet, ___________________________________.

A. many animal species will become extinct

B. many animal species become extinct

C. many animal species became extinct