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 adjectives have ____ forms, others have four.
answer:
two


question:
Women normally have ____ ovaries.
answer:
two


question:
Immunization slows down the time to market by about ____ days.
answer:

four