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: Mature birds boast a wing span of ____ feet.

A: six
****
Q: Insomnia can be short-lived, lasting only one to ____ nights.

A: two
****
Q: Chlorine has a shelf life of ____ months, so be sure to use fresh bleach.

A:
six
****