This is a very difficult operation.It is essential that you

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This is a very difficult operation.It is essential that you ________ for emergencyA.are to be prepared B.would preparedC.be prepared D.must be prepared

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受伤的冷风

痴情的外套

2026-04-02 10:50:05

答案选C 这里是虚拟语气 从句应该用should+原形,should可以省略 it is +necessary等形容词后,that主语从句中虚拟形式使用,这类形容词包括necessary,important,essential,imperative,urgent,preferable,vital,advisable等,例如It is necessary that you listen to the teacher carefully。或者It is essential that you be able to pronounce every single word correctly。

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  • 活泼的高跟鞋
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    2026-04-02 10:50:05

    答案选C 这里是虚拟语气 从句应该用should+原形,should可以省略 it is +necessary等形容词后,that主语从句中虚拟形式使用,这类形容词包括necessary,important,essential,imperative,urgent,preferable,vital,advisable等,例如It is necessary that you listen to the teacher carefully。或者It is essential that you be able to pronounce every single word correctly。

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