It is essential that he______all the facts first.

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问题 It is essential that he______all the facts first.

选项 A、is examining
B、will examine
C、examines
D、examine

答案D

解析 It is essential that…句型中,that引导的从句用虚拟语气,谓语动词用“should+动词原形”,should可以省略,故选D。类似用法的形容词还有:important,necessary,imperative,advisable,desirable等。
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