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