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: Many diseases require the tick to be attached for ____ or more hours to transmit disease.

SOLUTION: six

PROBLEM: Snowmobiles can accommodate ____ riders per vehicle.

SOLUTION: two

PROBLEM: Phonology has ____ levels.

SOLUTION:
two