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.

Insects are identified by having ____ sets of paired legs, while isopods have seven.
three

Salsa works on the basis of Mambo - a pattern of ____ steps danced over eight counts of music.
six

Greed is covetousness, with covetousness being a foundation stone in all of the ____ deadly sins.

seven