根据短文内容和以下提示：l)首字母提示，2)语境提示，3)汉语提示，在每个空格内填入一个适当的英语单词。所填单词要求意义正确，拼写准确。
There is no doubt that cellphones plays an important part_______our daily life. According to survey, about 75 percent of _________(青少年) have their own cellphones. It’s true that cellphones make people get in touch with each other more e__________. We can even use cellphones for ______ to music, watching movies and searching for the information in our spare time. But each coin has two _____(面). U______ mobile phones in the wrong way will do serious harm to us. First, many students are made to spend much money ______ QQ coins by cellphones. It ______(浪费) them a lot time and money. Second, some students lose themselves in p________ with cellphones after school so that they often forget to finish their homework. Third, a few students use cellphones to _______ (作弊)in the exams. From my point of view, students ought to make good use of cellphones. We should use cellphones properly in order to make them serve us better.