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]: Photosynthesis has ____ main sets of reactions.
[EX A]: two

[EX Q]: Hypertension afflicts about ____ in four American adults, both men and women, of all ages.
[EX A]: one

[EX Q]: Many angiosperms have more than ____ sets of chromosomes.
[EX A]:
two