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]: Inhibited desire is the most common sexual dysfunction, effecting ____ in three couples.
[A]: one


[Q]: Echinoderms have radial symmetry , many having ____ or multiples of five arms.
[A]: five


[Q]: Wombats have ____ incisor teeth that continue to grow throughout their lives.
[A]:
four