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.

[EX Q]: Fossil fuels come in ____ major forms coal, oil and natural gas.
[EX A]: three

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

[EX Q]: Air movement affects the human body in ____ different ways.
[EX A]:
two