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]: Every isometry is the composition of one, two, or ____ reflections .
[EX A]: three

[EX Q]: Blood donors can give blood every ____ weeks, or six times a year.
[EX A]: eight

[EX Q]: Plants have many white flowers with ____ petals, giving the plant a white, flat-topped appearance.
[EX A]:
four