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: Natural ytterbium is a mixture of ____ stable isotopes, with seven other unstable isotopes known.

SOLUTION: seven

PROBLEM: Women are ____ times more likely to have bone thinning than men.

SOLUTION: four

PROBLEM: Onion thrips have ____ to ten generations depending on temperature.

SOLUTION:
six