31. Food……..…(1) an important part in the development of nations. In countries…………..(2) food is deficient,
people have to spend most of their time getting enough to eat. This usually slows down progress because men have
little time to………..(3) to science, industry, government and art. In nations where food is plentiful and easy
to………(4). Men have more time to spend in activities that lead to progress, human betterment, and enjoyment of
leisure.
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