instruction:
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.
question:
Lung disease is America's number ____ killer, responsible for one in seven deaths.
answer:
three


question:
Team handball is played with seven players per side, six court players, and ____ goalkeeper.
answer:
one


question:
Female meerkats can have up to three litters in ____ year.
answer:

one