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]: Corporate mergers occur when ____ companies combine.
[EX A]: two

[EX Q]: Some countries require passports to be valid for ____ months after expiry of the visa.
[EX A]: six

[EX Q]: Falcons have ____ regions of retina for acute vision.
[EX A]:
two