instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Goblins are a little larger, usually _ to three feet, but sometimes much larger or smaller.
answer:
one


question:
Flatworms exhibit _ forms of life styles, free-living and parasitic.
answer:
two


question:
Thunderstorms occur infrequently throughout the year, averaging _ annually.
answer:

five