TASK DEFINITION: In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
PROBLEM: Monsoons coming every three to _ years can add almost a foot of water to the mountain's surface.

SOLUTION: seven

PROBLEM: Smokers die an average of six to _ years earlier than nonsmokers.

SOLUTION: eight

PROBLEM: People change when _ different cultures interact.

SOLUTION:
two