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]: Human gestation is divided into three trimesters of ____ months each.
[EX A]: three

[EX Q]: Wood consists of ____ distinct fuels.
[EX A]: two

[EX Q]: Bullying is most severe in grades ____ to nine.
[EX A]:
seven