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: Sealants can normally last up to ____ years and hold up very well under normal chewing.

A: five
****
Q: Elves are the first of the ____ families of fairy People.

A: eight
****
Q: Sharks have five to ____ gill slits.

A:
seven
****