阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个恰当的词或使用括号中词语的正确形式填空。

    Now computer games are popular among middle school students. Half of the (boy) students in our class like playing computer games very much. Our teachers and (they) parents tell them not to play games any more again and again， they still play computer games every day. They often spend a lot of time on computer games. What's worse, they don't listen to the teachers carefully and don't always remember (finish) their homework. It's (real) bad for them.

     (play) computer games wastes (浪费) lots of (money) and time, and is also bad for the students' health and study. But in the future students can't play computer games for long time because it won't be allowed(允许). So parents needn't worry about it any .