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: Earth is the third planet from the Sun in our solar system, which includes ____ other planets.

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

A: three
****
Q: Sexual maturity is between ____ and six years of age.

A:
three
****