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.

Q: Wind is renewable, and produces ____ emissions or by-products.

A: no
****
Q: Potential energy is divided into ____ different types of energy.

A: three
****
Q: Choirs usually sing in several parts, most often in ____ parts.

A:
four
****