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

解析不定式在句中做主语补足语。

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专业英语四级

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