instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Premolars have one, two, and sometimes _ canals.
answer:
three


question:
Tobacco kills four million people a year, one death every _ seconds.
answer:
eight


question:
Irradiated strawberries can remain unspoiled for up to _ weeks.
answer:

three