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.

All ticks have ____ pairs of legs during the immature stage and four pairs as an adult.
three

Pathologists study four to ____ years after medical school and their postgraduate training.
five

Most leaflets have ____ to three coarse teeth near their base.

one