2. 外语
  3. The opening ceremony is a great occasion. It is essential _______ for that.

The opening ceremony is a great occasion. It is essential _______ for that.

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问题 The opening ceremony is a great occasion. It is essential _______ for that.
选项 A、for us to be prepared
B、that we are prepared
C、of us to be prepared
D、our being prepared
答案A
解析 本题考查语法规则和词汇知识。for us to be prepared for that为不定式复合结构，在句子中充当真正的主语(it 是形式主语)。essential还可以用于下列结构：It is essential that．．．，但that从句中的谓语动词需要用虚拟语气形式，所以B不对。essential不引导动名词复合结构，所以D也不对。essential强调所要做的事，而非描述做事的人，所以C也不妥。本题译文：开幕式是一个很重大的场合。我们必须为此做好准备。
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