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.

[Q]: Herbs require at least ____ hours of sunlight.
[A]: six


[Q]: Many biologists believe the sandhill has been virtually unchanged for ____ million years.
[A]: nine


[Q]: Rattlesnakes breed only every two to ____ years.
[A]:
three