剑桥PET官方教材 Cambridge Complete Preliminary for Schools (SB+TB+WB+CD)2020 Nice version

Complete B1 Preliminary for Schools即PET青少版考试，含全套PDF以及音频。

PET exam preparation book (B1): Complete Preliminary for Schools for the Revised 2020 Exam (Student's Book + Teacher's Book + Work Book + audio CD)

文件夹包含：
Complete Preliminary for Schools Students's Book
Complete Preliminary for Schools Teacher's Book
Complete Preliminary for Schools Work Book
CD_SB
CD_WB
Unit Test, Final Test