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: Lunar eclipses occur every ____ months, on average.

A: six
****
Q: Birds have ____ basic types of feathers.

A: three
****
Q: Rosettes grow close to the ground and bear leaves averaging ____ inches in height.

A:
six
****