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 When were plastic bottles first used for soft drinks? 3 Do horses and giraffes sleep standing up? 4 When was the first English dictionary written? 5 Are camels born with humps? 6 Can whales swim backwards? 7 When was the $ sign introduced? 8 When was the tea bag invented? 9 How many colours can crocodiles distinct? 10 Which animals are the only mammals that can fly? in 1755 Yes bats No None. They are colour blind. in 1970 No over 5 litres in 1788 in 1908