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: Most people get one or ____ common colds every year.

A: two
****
Q: Most children start primary school at ____ years of age.

A: five
****
Q: All animals carry ____ copies of each gene.

A:
two
****