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: Macular degeneration comes in ____ forms, dry and wet.

Answer: two

Question: Tuberculosis develops in ____ stages.

Answer: two

Question: Mediators generateed during mast cell activation are derived in ____ ways.

Answer:
three