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.

[EX Q]: Kayak paddles have ____ blades, canoe paddles have one.
[EX A]: two

[EX Q]: Kinetic energy consists of ____ types of energies.
[EX A]: three

[EX Q]: Doctors say the average adult needs ____ to nine hours of sleep a night.
[EX A]:
seven