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Do you have a smartphone? Do you like to talk on the smartphone? If you do, please allow me to give you some _________on how to behave when you use your smartphone.

The first point is loudness. When you talk on your smartphone in public, please don't shout. In fact, the microphones in smartphones are very sensitive(靈敏的).So you can be heard even if you speak ___________.

Another point is about personal space. I don't think it is polite to make calls in small spaces full of people. This makes others uncomfortable and forces them to_______ your personal business.

Lastly, doing two things at the same time is_______. For example, making calls while driving is a bad habit. Pay attention to the road! Similarly, when staying with your friends, _________your smartphone and enjoy staying with them.

1.A.advice B.opinions C.information

2.A.loudly B.quietly C.silently

3.A.deal with B.think about C.listen to

4.A.dangerous B.wise C.general

5.A.turn down B.turn off C.turn on

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