Odpowiedź:
If we didn't have antibiotics, a lot of people would die because of simple diseases.
If books didn't exist, most people still would be illiterates.
If we didn't have cars, our life wouldn't be so comfortable.
If computers didn't exist, our science wouldn't improve.
If electricity didn't exist, we wouldn't have any inventions.
If we didn't have fired, we still would eat raw food.
If printing wasn't invented, we wouldn't have books.
If we didn't have television, we couldn't see many interesting places without travelling.