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Many people use mobile phones as the alarm clocks and they also use them to check e-mails before sleeping. It’s a pity that these _________ are causing (引起) most of their sleeping problems.

Several years ago, my boss always _________ her mobile phone until very late and had difficulty sleeping later. She even got badly ill because of that. Now she always _________ her phone in another room at night. And she also _________ her friends to do so. “I give each of my friends the _________ Christmas gift—an alarm clock. So they could _________ using the phone as the alarm clock,” she said.

If your mobile phone _________ you up in the morning, it may also keep you up at _________. A study shows that people like playing with mobile phones a lot _________ have sleeping problems. And according to a Swedish __________, a quarter of young people in this country like having their phones _________ them. The study also tells us that most of them feel _________ for not replying messages. They even reply messages to their friends before sleeping.

So what kind of people like to use mobile phones in their _________ better? A study showed that three quarters of people aged between 18 and 34 like to sleep with their phones near _________ better. That number becomes _________ in the middle age, but only people aged 65 and older like leaving the phone in another room when they are sleeping.