НУЖНО НАЙТИ И ПОДЧЕРКНУТЬ ПАССИВНЫЕ ЗАЛОГИ Listen a why anyth Lesson Three Grammar 1 1 Listen and read. Where does chewing gum come from? In ancient times, people from different cultures chewed gum from trees, but the gum had little flavour. In the 1880s, the Fleer brothers tried to make it taste better. Experiments were done on gum from a tree called the chicle tree. The gum was covered with sugar and named Chiclets. Although the brothers' friends and family liked it, the gum wasn't advertised, so other people didn't know about it. Chewing gum wasn't sold until the mid-1880s. Factories were opened. Then chewing gum became popular. Today, many kinds of chewing gum flavours are made and chewing gum is bought by people all around the world. However, today, chewing gum isn't always made from trees. Some companies use artificial substances instead.