Scientists believe that the first inhabitants of the America arrived by crossing the land bridge that connected Siberia and ________ more than 10,000 years ago.

1. A.
   this is Alaska now
2. B.
   Alaska is now
3. C.
   is now Alaska
4. D.
   what is now Alaska

Scientists believe that the first inhabitants of the America arrived by crossing the land bridge that connected Siberia and ________ more than 10,000 years ago.

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