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]: Cats have five toes on their front paws, but only ____ touch the ground when walking.
[A]: four


[Q]: Titanium is found in column ____ along with chemically similar zirconium, hafnium, and thorium.
[A]: four


[Q]: Plants typically take ____ to three years to fully mature.
[A]:
two