Контрольная работа по "Английскому языку"

Today cooking is quite an art. There are great chefs, famous restaurants, thousands and thousands of cook clubs, and millions of people who are proud of being able to cook well.
Yet there was a time when man didn’t even cook his food raw. Even after fire had been discovered, the only kind of cooking that took place was to throw the carcass of an animal on the burning embers.
It was only gradually that man learned to bake in pits with heated stones, and to boil meat and vegetables, dropping red hot stones into a vessel of water.