If you heat water to 100°C,, it boils., If you don't eat for a long time,, you feel weak, hungry., If people are polite to others,, others are polite to them., If the sun goes down,, it gets dark., If you mix red and white paint,, you get pink., If children don't get enough sleep,, they become tired and irritable., If you touch fire,, you burn yourself., If you don't practise a language regularly,, you forget it.

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