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.

Malaria kills up to ____ million people each year.
two

Taiwanese law permits a jail term of up to ____ years for spreading computer viruses.
three

Studies show that childhood obesity is epidemic and that ____ in five children is overweight.

one