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:
Millipedes have ____ pairs of legs on each body segment.
answer:
two


question:
Hamsters can live to be ____ to four years old.
answer:
three


question:
Many biologists believe the sandhill has been virtually unchanged for ____ million years.
answer:

nine