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: Western medicine uses ____ approaches, drugs or surgery.

Answer: two


Question: Nymphs are less than ____ millimeters in size.

Answer: two


Question: Most ferrets prefer to have all ____ feet in the litter pan when they use it.

Answer:
four