Переведите текст . betsey: hurry up, rob. we mustn't be late! mark: don't worry, mum. he's got two hours. betsey: but he must be at the airport two hours before his flight. mark: no, you needn't. rob's bag is not very heavy. we must go straight to the check-in desk. rob: there are a lot of them. which one is for rob's flight? betsey: look at the information board. what is the flight number? rob: it's british airways, flight 345. betsey: fine, so we must go then to desk 112. rob: what must we do there? betsey: we must show your passport and your ticket and get a boarding card. and we must also check in your baggage. it's not quick. there are long queues in heatrow. now run and joing the queue. 30 minutes later rob: what must i do now? am i ready, mum? betsey: no, you aren't not yet. now you must go through security control. rob: must i show them my passport? betsey: no, you need't, but you must show it to them at assport control. security must examine your hand baggage for dangerous things. you mustn't have any liquids or sharp objects in your baggage. rob: oh, really. i think i've got a bottle of water in my rucksack. must i give it to you? betsey: yes, you must. you mustn't take it with you. rob: and what about these sandwiches? must i have them? betset: no, you needn't. sandwiches are ok. mark: and we must say "goodbye" here! we mustn't cross this line. betsey: ok, then. now go and be careful. don't lose your ticket! don't miss your flight! dont leave your bag behind! mark: have a great time in russia! rob: bye, mum! bye, mark!