you shouldn't go to school. - If you are sick, you shouldn't eat junk food. - If you want to lose weight, you should study. - If you want to get good grades, you should be nice. - If you want to make friends, you should put on a jacket. - If you are cold, you should clean it. - If your house is dirty, you should sleep more. - If you are tired, you should drink water. - If you are thirsty,

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