hasbecomeaproblemfor的知识精选

Mobilephone(手机)hasbecomeaproblemformiddleschools.Somemi...
问题详情:Mobilephone(手机)hasbecomeaproblemformiddleschools.SomemiddleschoolsinAustraliahavebanned(禁止)studentsfromcarryingmobilephonesduringschoolhours.Mobilephoneusedamongchildrenhasbecomeaproblemforthesc...
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