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]: Today there are ____ mating pairs.
[A]: four


[Q]: Many people have ____ symptoms until they suffer chest pains or a heart attack.
[A]: no


[Q]: Lobsters have ____ walking legs and two legs bearing claws.
[A]:
eight