She told me she wanted to ________ her two o’clock appointment in order to take care of her sick. A.have broken down B.have broken out C.have broken in D.have broken up
答案:B 解析: 考查动词短语;put down放下,记下;call off取消;hang up挂断,拖延,把……挂起来;take off取消,脱衣,起飞,减弱。