instruction:
Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.
question:
Some species live for as little as ____ months.
answer:
six


question:
Electric power means no gas or oil to spill, and ____ pollution in the air.
answer:
no


question:
Organs arise from ____ cell layers in the developing embryo.
answer:

three