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: Birds have ____ basic types of feathers.

A: three
****
Q: Seraphs have ____ wings, and their voices can shake doorposts and thresholds.

A: six
****
Q: Calves are spotted when born and develop their brown coats in ____ months.

A:
six
****