instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Tobacco kills four million people a year, one death every _ seconds.
answer:
eight


question:
Some manatees have _ or four nails on the tip of each flipper.
answer:
three


question:
Pupae are present about _ days before a new generation of adults begins to emerge.
answer:

ten