1. (2017高二上·龙江期中) 假定你校开展了“根除陋习，创建文明校园”的活动。请你以此为主题用英语写一篇发言稿，向全校学生倡议：

1）.根除：乱扔垃圾、浪费食物、吸烟……2）.提倡：讲礼貌、互助……

注意：1）.词数100左右；2）.可以适当增加细节，以使行文连贯；3）.开关和结尾已为你写好，不入总词数。

Dear friends,

    As is known to all, our school has launched a campaign against bad habits in order to build a civilized school.