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.

Q: Neuroblasts delaminate in five waves spanning approximately ____ hours.

A: three
****
Q: Seismologists offer ____ major theories for the occurrence of large, deep earthquakes.

A: three
****
Q: Cats can harbor a heartworm infection at any age from ____ months to seventeen years.

A:
nine
****