instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Humans host _ species of louse, the head louse , the body louse and the pubic louse .
answer:
three


question:
Corms are undifferentiated, uniform, and contain _ rings when cut apart.
answer:
no


question:
Fingernails have a life span of _ to six months.
answer:

three