Relacionar Columnas DO YOU KNOW? cz.5Versión en línea Find answers to the questions by clicking the right boxes. por Monika Wójcik 1 Can whales swim backwards? 2 Which animals are the only mammals that can fly? 3 When was the tea bag invented? 4 How much water can an elephant's trunk hold? 5 When was the first English dictionary written? 6 How many colours can crocodiles distinct? 7 When was the $ sign introduced? 8 Are camels born with humps? 9 Do horses and giraffes sleep standing up? 10 When were plastic bottles first used for soft drinks? in 1970 over 5 litres Yes bats No None. They are colour blind. No in 1908 in 1755 in 1788