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: Intermittent streams flow at least ____ months of the year.

SOLUTION: six

PROBLEM: Lung disease is America's number ____ killer, responsible for one in seven deaths.

SOLUTION: three

PROBLEM: Electromagnetic changes are at the speed of light and reach Earth within ____ minutes.

SOLUTION:
eight