The opening ceremony is a great occasion. It is essential______for that.A.for us to be pre

学历类 职称英语 已帮助 人

The opening ceremony is a great occasion. It is essential______for that.

A.for us to be prepared

B.that we are prepared

C.of us to be prepared

D.our being prepared

请帮忙给出正确答案和分析,谢谢!

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