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1．(This/That)isabook.(This/That)isapenoverthere.2．—Isthatyourschoolbag?—(No/Not),itisn't.It's(she/her)schoolbag.一、根据句意，...
Period3Period3Unit2baseballcomputergameringkeywatchnotebookMatchthewordswiththethingsinthepicture.1.baseball___2.watch___3.compute...
