instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Beavers have an average of _ young once a year.
answer:
four


question:
Reverse osmosis uses three to ten gallons of water to produce _ gallon of drinking water.
answer:
one


question:
Humans have _ different types of antibodies which are given shorthand names.
answer:

five