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.

[EX Q]: Amphibians have ____ legs, and often look like reptiles.
[EX A]: four

[EX Q]: Respiratory therapists complete two to ____ years of education.
[EX A]: four

[EX Q]: Most infected people have ____ symptoms and are never diagnosed.
[EX A]:
no