单选题 Originally canoes were made by the hollowing out of logs and used were for combat as well as transport.

【正确答案】 C

【答案解析】答案：C 分析：被动语态的语序是be动词+动词的过去分词，因此应该将were放在used之前。改正：used were → were used 翻译参考：最初，独木舟是通过将圆木挖空而制成，并被用于战斗和运输中。