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]: Rattlesnakes breed only every ____ to three years.
[EX A]: two

[EX Q]: Ferrets normally tremble for ____ reasons.
[EX A]: two

[EX Q]: Most people experience ____ symptoms at the time infection occurs.
[EX A]:
no