If you heat ice, it ____. If people don’t eat, they ____. Water boils if you ____ it to 100°C. If you mix red and blue, you ____. If it rains, the ground ____. If you don’t brush your teeth, they ____. If the sun ____, it gets hot. If cats are scared, they ____. Plants die if they don’t ____. If you ____ glass, it breaks.

Zero conditional

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