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]: Female dropouts are also ____ times more likely to smoke during pregnancies.
[A]: eight


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


[Q]: Ligand seeks ____ receptors into binding and mutual phosphorylation.
[A]:
two