欢迎大家来到老师的部落格。此部落格主要是帮助一些无法登入Google Classroom的学生，让她们在这儿跟进学习。
Based on the text of unit 11 in your BCSK text book, please complete page 61 & 62 of your BCSK activity book. For exercise 1 in page 61,...
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