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: Knee arthroscopy is used basically in ____ ways.

A: three
****
Q: Neurofibromatosis appears in ____ forms.

A: two
****
Q: Some deserts receive only three or ____ inches of rain a year.

A:
four
****