betterscore wrote:
Along the major rivers that traverse the deserts of
northeast Africa, the Middle East, and northwest
India, the combination of a reliable supply of water
andgood growing conditions both encouraged
farming traditions that, in places, endure in at least
6,000 years.
(A) good growing conditions both encouraged
farming traditions that, in places, endure in
(B) good growing conditions encouraged farming
traditions that have, in places, endured for
(C) of good growing conditions have encouraged
farming
...
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