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]: Beavers live in families that include an adult pair and ____ to three years worth of offspring.
[A]: one

[Q]: Blood Parrots are a hybrid of ____ Cichlids species.
[A]: two

[Q]: Refraction occurs ____ times, as the light intersects the vessel s inner and outer surfaces .
[A]:
four