instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Skin cancer affects one in _ people in the United States over a lifetime.
answer:
six


question:
Trees can also be air layered but air layering usually takes four to _ months to be successful.
answer:
six


question:
International mail consists of _ categories of mail.
answer:

three