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]: All matter exists in ____ dimensional space, both internal and external.
[EX A]: three

[EX Q]: Wind is renewable, and produces ____ emissions or by-products.
[EX A]: no

[EX Q]: Coughs come in ____ varieties-acute and chronic.
[EX A]:
two