instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Gestation is _ to nine months long, after which a single calf is born.
answer:
eight


question:
Sexual maturity is achieved by the age of _ months.
answer:
three


question:
Commercial standards require that urchins be at least _ percent roe by weight.
answer:

ten