For questions 1-8, read the text below and think of the word which best fits each gap.Use only one word in each gap. There is an example at the beginning (0). A cure for insomnia? I've just read an article about blue light and I think I've discovered (0) THE most likely reason for my recent restless nights! You see, blue light, emitted by sunshine, some types (1) lighting and electronic device screens, has both benefits and dangers for us. It helps improve mood, memory and concentration, but if we (2) a lot of time staring at screens, it can actually cause damage to our eyes. Interestingly, the article also points (3) that blue light controls our body clocks and using electronic devices too much immediately (4) going to getting bed can disrupt our sleep cycles. My nights have (5) worse recently and I'm sure it's because I (6) reading on my tablet when I'm in bed. The experts' advice (7) just started to avoid using bright screens for about two to three hours before sleep, but I don't think I can restrict myself quite that much. Maybe, I'll switch (8) reading a printed book and give social media a miss after nine o'clock!​

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