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]: World population continues to rise, even as a few countries move toward ____ growth.
[EX A]: zero

[EX Q]: Bullying is most severe in grades ____ to nine.
[EX A]: seven

[EX Q]: Sponges have ____ cell types.
[EX A]:
three