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]: Irrigated land is almost ____ times as productive as rainfed cropland.
[EX A]: three

[EX Q]: Some children start asking questions when they're ____ or five years old.
[EX A]: four

[EX Q]: Counterpoint is the simultaneous combination of ____ or more melodies.
[EX A]:
two