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: Scullers use ____ oars, sweep oarsmen pull just one.

SOLUTION: two

PROBLEM: Sedge wrens are listed as endangered by all ____ states.

SOLUTION: three

PROBLEM: Glycolysis is a determined sequence of ____ enzyme -catalyzed reactions.

SOLUTION:
ten