In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Monsoons coming every three to _ years can add almost a foot of water to the mountain's surface.

Answer: seven


Question: Sharks can have from five to _ gills.

Answer: seven


Question: Pups are unable to swim or find food until seven to _ weeks old or until the ice melts.

Answer:
eight