instruction:
In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.
question:
Giraffes have two horns and _ or three knobs.
answer:
two


question:
Puppies can start vaccinations at _ weeks.
answer:
six


question:
Vitamins are organic molecules, as are the _ major groups of macromolecules.
answer:

four