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]: Warthogs also sport ____ sharp tusks.
[A]: four


[Q]: Marsupials have ____ vaginas and a double uterus.
[A]: two


[Q]: Osteoporosis is about ____ times more common in women than in men.
[A]:
four