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]: Gorillas are sexually mature at ____ to nine years of age.
[A]: six


[Q]: Threshold is a value to avoid ____ divide.
[A]: zero


[Q]: Rice is grown in ____ seasons in India, autumn and winter in kharif and summer or rabi.
[A]:
three