It is essential that people___enough vitamins every day.

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  • It is essential that people___enough vitamins every day.

    这是It is + adj + that从句

    形容词essential后的从句用虚拟语气,谓语动词用should+do或者省略should直接接动词原形

    类似的形容词还有important,necessary,vital,crucial,advisable,preferable,imperative,appropriate

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