instruction:
Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
question:
Female mealybugs have only ____ nymphal stages.
answer:
three


question:
Most amphibians reach maturity at three or ____ years.
answer:
four


question:
Mantids tend to be green or tan, and vary from ____ to six inches long.
answer:

three