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]: Heart attacks occur most often around ____ in the morning.
[EX A]: five

[EX Q]: Neutrons consist of one up quark and ____ down quarks.
[EX A]: two

[EX Q]: Statistics show that within ____ years of divorce, many people marry a second time.
[EX A]:
three