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: Numbers can be positive or ____ only.

SOLUTION: zero

PROBLEM: Cognitive changes are probably equivalent to about a three to ____ month delay in progression.

SOLUTION: six

PROBLEM: Lobsters have ____ pairs of antennae, the largest of which is used for tactile sensing.

SOLUTION:
three