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: Green energy comes in ____ basic forms.

A: two
****
Q: Snow leopards eat almost anything they can catch, often hunting animals ____ times their size.

A: three
****
Q: Some species bear living offspring only every three to ____ years.

A:
five
****