2 Complete the text with about, at, in, of, on, to, or with. Scientists have been aware 1 ________ technology addictions for many years, but now there is a new kind: recently a man needed treatment after becoming addicted 2 ________ Google Glass. The 31-year-old American man visited a clinic in the USA because he was worried 3 ________ an alcohol addiction. He had to take off his Google Glass when he arrived - and doctors were shocked 4 ________ his reaction. He suffered withdrawal symptoms which were very similar 5 ________ drug or alcohol withdrawal. Originally, the man had become keen 6 ________ Google Glass because it helped him to become better 7 ________ his job. He gradually became more and more obsessed 8 ________ the device. However, he also began to feel unhappy 9 ________ the effect that it was having on his mood: he became bad- tempered and forgetful when he was not wearing it. The device was helping him to be successful 10 ________ his job, but it was harmful 11 ________ the rest of his life. At first, the doctors at the clinic were curious 12 ________ one symptom: the man kept tapping the right side of his head with his finger. The man later explained that this was how you changed the view on Google Glass.