A-A+
As there was a power cut in the hospital the
问题详情
As there was a power cut in the hospital, the surgeon had to ______ the operation.
A．call for
B．call on
C．call off
D．call up请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：calloff意为“取消，停止”。A．callfor意为“需求，需要”；B．callon意为“短暂地访问，拜访”；D．callup意为“使想起，使忆起”。
