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]: Moths are most active during the first three to ____ hours of darkness.
[A]: five


[Q]: Smoking causes lung cancer in ____ ways.
[A]: two


[Q]: Any number divided by itself equals one , except if that number is ____ .
[A]:
zero