填空题 The doctor phoned me that because of some emergency he 1 (不得不取消我们的预约).

  • 1、
【正确答案】 1、The doctor phoned me that because of some emergency he had to call off our appointment.    
【答案解析】本题测试习惯用语have to及短语call off。习惯用语have to意为“必须，不得不”，后接动词原形。短语call off意为“取消，撤消”。此句中也可用动词cancel。