TASK DEFINITION: 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.
PROBLEM: Nymphs reach maturity in five to ____ months, with faster maturation at higher temperatures.

SOLUTION: ten

PROBLEM: Buses are ____ times as fuel efficient as cars.

SOLUTION: five

PROBLEM: Spotted hyenas reach sexual maturity at the age of ____ years.

SOLUTION:
three