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

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

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

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

1. A.
   came up
2. B.
   came out
3. C.
   came to power
4. D.
   came into being

 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