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]: Lions stand ____ feet tall at the shoulders.
[A]: three


[Q]: Western medicine uses ____ approaches, drugs or surgery.
[A]: two


[Q]: Reservoirs cover an area of the planet ____ times the size of Britain.
[A]:
six