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]: Plants grow up to ____ feet tall and spread to about three feet.
[A]: three


[Q]: Grasshoppers begin egg laying one to ____ weeks after becoming adults.
[A]: three


[Q]: Molecular recognition relies on how well ____ molecules fit together.
[A]:
two