【正确答案】 C

【答案解析】[解析] 本句意思是“工人们最终取消了罢工”。句中call off意为“停止，取消”。cancel“取消”，如：Why was the baseball game cancelled yesterday?为什么昨天的棒球比赛取消了?put off“推迟”，如：They decided to put off the meeting until after Christmas．他们决定将会议推迟到圣诞节后举行。end“结束”，如：The government acted to end a bakers' strike in the city.政府采取行动结束城里面包师傅的罢工。participate in“参加”，如：Did you participate in the discussion?你参加讨论了吗?