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]: Sexual maturity is reached at ____ years, and females calve every other year.
[A]: four


[Q]: Monatomic elements have with ____ atoms in each per molecule.
[A]: three


[Q]: Scorpions have ____ legs and a pair of lobster-like pinchers and a tail that curves up.
[A]:
eight