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Read the following sentences and, according to the text, decide if they are true ( T ) or false ( F ). ( ) In Seoul, people use their smartphones to control devices like washing machines. ( ) In Seoul, people use their smartphones to do their shopping. ( ) In Seoul, people use their smartphones to pay for public transportation. ( ) In Seul, people use their smartphones to try a spicy dish. Choose the alternative which presents the correct sequence, from top to bottom.