If wedevelop the world successfully we must make sure that everyone is able to take part

问题补充：

If wedevelop the world successfully, we must make sure that everyone is able to take part in the new world we create.

A. are about to

B. are going to

C. are to

D. will

答案：

A. are about to

B. are going to

(答案→)C. are to

D. will

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