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      Sincethetimehumankindstartedgardening,we
問題詳情:      Sincethetimehumankindstartedgardening,we_____tomakeourenvironmentmorebeautiful.A.try        B.havebeentryingC.aretrying  D.willtry【回答】 B【解析】考查動詞時態。根據sin...
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