3. John assured his boss that he would ____ all his energies in doing this new job. A. call forth B. call at C. call on D. call off call forth 投入, 引起, 引发call at 拜访（某地）call on 拜访（某人）call off 取消cancel 取消 evoke 引起, 引发, 唤起provoke 引起, 引发initiate 引起，引发arose 引发, 唤起trigger 引起, 引发, 扳机on duty 轮流值日rise 升起, 上升appear 出现arise 出现arouse 引起raise 举手, 出手, 提出, 养育disaster 灾难elixir 万能药