In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
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Question: Southern moles are six to seven inches long and weigh _ to four ounces.

Answer: three


Question: Essential oils have a non-toxic, residual effect of up to five months from just _ application.

Answer: one


Question: Some kinds complete the life cycle in less than a year, while others require up to _ years.

Answer:
four