Perhaps it is true that nobody in the world knows exactly how the earth .A. came upB. came

问题补充：

Perhaps it is true that nobody in the world knows exactly how the earth .

A. came up

B. came out

C. came to power

D. came into being

答案：

A. came up

B. came out

C. came to power

(答案→)D. came into being

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