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]: Beryllium has ____ protons and four electrons.
[EX A]: four

[EX Q]: Beryllium is found in a variety of countries on ____ continents.
[EX A]: five

[EX Q]: Reactive resin is the last of the ____ types of balls.
[EX A]:
three