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]: Some animals can survive freezing, but ____ animals can survive grinding.
[EX A]: no

[EX Q]: Mollusks have one or ____ hearts.
[EX A]: two

[EX Q]: Moles breed in late winter or spring and have a gestation period of about ____ to six weeks.
[EX A]:
four