instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Pangolins walk on all _ of their stout limbs, which are adapted for digging.
answer:
four


question:
People have _ kidneys.
answer:
two


question:
All plants are on their own roots, but there are _ signs of root rots.
answer:

no