instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Lemurs are very social and travel in troops of _ to thirty.
answer:
three


question:
Tarantulas have _ pairs of book lungs.
answer:
two


question:
Some growers say never to divide with less than _ pseudobulbs because it can inhibit flowering.
answer:

four