instruction:
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.
question:
Medial moraine is formed from ____ lateral moraines.
answer:
two


question:
Rabbits have ____ incisors in the upper jaw where rodents have only two.
answer:
four


question:
Organisms have ____ forms of nucleic acid.
answer:

two