单选题 I was supposed to go to a concert with your sister the other night, but your sister didn't turn up. I can't believe I have been______.
【正确答案】 C
【答案解析】[解析] 本题答案是C。C项leave sb up的意思是:让某人空等一场,放某人鸽子。根据句中出现的“你姐姐一直都没来”可知只有C项符合题意。