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: Animals exhibit ____ patterns for bringing sperm and eggs together.

A: two
****
Q: Box turtles are mature and capable of mating at ____ years old.

A: five
****
Q: Rocks come in ____ standard colors and some others as well.

A:
seven
****