instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Stroke is our nation's number _ killer, and a leading cause of disability for older adults.
answer:
three


question:
Sprouts can grow as much as _ feet per year.
answer:
six


question:
Autism is three to _ times more likely to affect boys than girls.
answer:

four