题目

阅读下面的短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。Hello, my name is Tim. I am twelve. Do you want (know) something about my school life? Let me tell you. I go to school at 8:30. I have (class) from 9 a.m. to 3 p.m. On Monday, I have English, math science. I have P.E. on Tuesday and Thursday. Music is my favorite subject, I have it on Friday. After class, I often play sports with (I) friends. I like (play) tennis. I think my school life is great!近期我国许多地区陷入严重的雾霾之中，其形成原因与燃煤和汽车尾气的排放有关．雾霾的主要组成是可吸入颗粒物（如PM2.5等）和两种易形成酸雨的气态污染物 、 ．