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]: Deer mice have four toes on the forefeet and ____ toes on the hind feet.
[EX A]: five

[EX Q]: Food waste is transformed into soil-like humus in three to ____ days.
[EX A]: seven

[EX Q]: Life is change - most of the cells in our body are replaced, at the most, each ____ years.
[EX A]:
seven