2017年托福考试真题:2017年6月托福考试写作常见语法错误：校园暴力

　　找出下列句子的一处 语法错误：
　　Since the Internet is not an easy forum to supervise, it is the responsibility of teachers and parents to teach children the fine line between free speech and cyber bullying in order to protect anyone who get hurt from this new type of school violence.
　　♜ 适用考题：
　　When you have a friend for a long time, whether you will continue the friendship even he or she does something you do not like. (2015.5.30)
　　答案：
　　When smart traffic lights are set up and traffic management software is installed, the number of green lights on each street has been optimized to avoid traffic congestion as well as to allow ambulances to reach incidents without any delay.
　　* software (不可数名词)软件;托福写作常用不可数名词，还有：education, transportation, equipment, evidence, globalization, feedback, homework, advice, information等。

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