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]: Water is the only substance on earth found naturally in ____ forms - solid, liquid, and gas.
[A]: three


[Q]: Biennials require portions of ____ growing seasons to reproduce.
[A]: two


[Q]: Plants generally bear ____ to six pairs of lance-shaped, smooth leaves.
[A]:
four