TASK DEFINITION: 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.
PROBLEM: Plants produce seed at ____ years of age.

SOLUTION: eight

PROBLEM: Pinks live only ____ years.

SOLUTION: two

PROBLEM: Most vaccinations take effect in ____ weeks' time.

SOLUTION:
two