instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Flatworms exhibit _ forms of life styles, free-living and parasitic.
answer:
two


question:
Most amphibians reach maturity at _ or four years.
answer:
three


question:
Fleeces weigh five to _ pounds and have a staple length of six to twelve inches.
answer:

ten