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]: Some tropical species have ____ or three generations per year.
[A]: two


[Q]: Cattails contain ____ times the starch of an equal weight fo potatoes.
[A]: ten


[Q]: Some rusts produce up to ____ different spore forms.
[A]:
five