Smartphones are becoming more and more of a necessity for high school students. Therefore, a discussion was held about     1     the senior school students should use our smartphones at school. People     2     (support) the idea consider it convenient to contact the students’ parents when necessary. However, people who are against it find some students are addicted to playing the smartphones easily,     3     effect on their studies is quite worrying. It is even     4     (bad) that smartphones can also discourage students’ will.