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: People often have to wait between three and ____ years for an organ especially for a liver.

SOLUTION: five

PROBLEM: International trade is a ____ way street.

SOLUTION: two

PROBLEM: Wolves disperse from their family pack before they turn ____ years old and some roam far away.

SOLUTION:
three