關於Sincethetimehumankin的百科

•       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since引導的時間狀語從句可知所填詞表示“從過去一直持續...
• 2020-09-2526410