Rewrite the sentences without changing the meanings.

Every student must wear uniform. It is obligatory.

=> It is obligatory that

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The law requires that his car ___________checked at least once a month.

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It's important that every student _________all the lectures.

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It is necessary that children ________by their parents.

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It has been proposed that the topic be ____________ .

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The doctor suggested that his patient______.

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The leader ordered that the party _______moved to next month.

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It is a ___________from his doctor that he ___________short trips abroad.