UsinglanguageSkimthelettersandfindwhothewritersareandwhattheirpurposeofwritingthelettersis.Thefirstletteriswrittenbyastudentwhoisa...
![B6Unit 4 Global warming-Using language[课件]](https://file.xiaomilidoc.com/convert/202502/15/8710588/thumb-P1-28f19a60-f481-4e6f-8b17-59dd8615c4c8-320x240.webp)
