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: Climbers are the most frequent cause of injury for children ____ and older.

SOLUTION: six

PROBLEM: American women are four to ____ times more likely than Asian women to die of breast cancer.

SOLUTION: seven

PROBLEM: Biennials complete their life cycle in ____ years a.

SOLUTION:
two