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: Photons have momentum but ____ mass or electrical charge.

SOLUTION: no

PROBLEM: Dicots are plants that have ____ cotyledons.

SOLUTION: two

PROBLEM: Indoor cats can live up to ____ times longer than an outdoor cat.

SOLUTION:
seven