- 问题详情:MrChenwaspuzzled(闲惑的)andalittlesuspicious(怀疑的).Hesatintheofficeandstudiedaletterapparently(明显地)fromMrsWang,themotherofoneofthepupilsinhisclass.Therewassomethingaboutitwhichworriedhim.“Idon'tunderstand,”hesaidtohimself.Heshookhisheadashe...
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