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.

Most ducks acquire breeding plumage in the fall, ____ or seven months before other birds.
six

Cardiovascular disease is the cause of more deaths than the next ____ causes of death combined.
seven

Spiders possess ____ legs , in contrast to insects, who possess only six.

eight