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.

Sexual maturity occurs at ____ to four years for females and four to five years for males.
three

Manatees swim ____ to six miles per hour.
two

Women can have hot flashes or insomnia ____ years before they have their last menstrual period.

ten

