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]: Hoatzin has typical foot with ____ toes forwards and one backwards.
[A]: three


[Q]: Romantic love involves ____ people.
[A]: two


[Q]: Scientists believe that our galaxy contains five to ____ times as much dark matter as visible stars.
[A]:
ten