Section B 第 4 课时（2a~2c）类别学习重点重点单词in, library, ask, some, find, lost, classroom, e-mail, at, call, must重点短语in the school library, Lost and Found, call sb. at重点句式1. Some keys are in Classroom 7E. 2. E-mail me at maryg2@gfimail. com. 3. I lost my school ID card. 4. ...
