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]: Differentiation is caused by the energy going in ____ directions.
[EX A]: two

[EX Q]: Hamsters can live to be ____ to four years old.
[EX A]: three

[EX Q]: Compounds are ____ or more elements chemically combined.
[EX A]:
two