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:
Most dens are oval shape, six to ____ feet long and about six feet in height and width.
answer:
nine


question:
Mammals have ____ cervical vertebrae, a number that remains remarkably constant.
answer:
seven


question:
Mares can have ____ or two foals.
answer:

one