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.

[EX Q]: People often have to wait between three and ____ years for an organ especially for a liver.
[EX A]: five

[EX Q]: Tin has ____ allotropic forms.
[EX A]: two

[EX Q]: Dinoflagellates have ____ dissimilar flagella.
[EX A]:
two