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:
Scientists divide the mosses into ____ groups .
answer:
eight


question:
Some nurseries only take children aged ____ years and over.
answer:
two


question:
Medical abortions require ____ doctors' visits, driving up the cost.
answer:

three