Mobile phones are being more (1.widely) used.They're light (2.in) weight and easy to carry,offering fast and convenient service for communication.The users use them for (3.making) phone calls,sending short messages and internet-surfing.In recently years,mobile phones have become popular with middle school students.Quite a few use (4.them) to keep in touch with their families and friends,and which,of course,(5.is) convenient.However,I don't think it's good to do so.In spite of the (6.advantages) mentioned above,student users often waste a lot of time chatting on the phone in (7.their) spare time.Some even use (8.加them) to cheat (9.加in)exams.In addition,mobile phone bills cost students'parents (10.lots) of money.
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