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: Insects are identified by having ____ sets of paired legs, while isopods have seven.

SOLUTION: three

PROBLEM: Comprehension is the second of the ____ elements of the informed consent process.

SOLUTION: three

PROBLEM: Oral cancer kills one in ____ who develop the disease but survivors can be severely disfigured.

SOLUTION:
three