PEOPLE / BEGAN / AS SOON AS / SELL / MAKE / THINGS / ADVERTISING /...
76. people / began / as soon as / sell / make / things / advertising / found / useful.A. Advertising was found useful as soon as people have begun making things to sell.B. As soon as people began making things to sell, advertising was found useful.C. As soon as people began making advertising, things were found useful to sell.D. As soon as advertising was found useful, people began making to sell.