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]: Elephants also have four molars, ____ on the top and one on the bottom on both sides of the mouth.
[EX A]: one

[EX Q]: Banks hold ____ excess reserves and the public holds no currency.
[EX A]: no

[EX Q]: Coal accounts for ____ quarters of electricity generation.
[EX A]:
three