单选题 He changed his mind for the second time, ______ I refused ever to go out with him again.
【正确答案】 A
【答案解析】[解析] 此题测试介词+关系代词引导的非限定性定语从句的用法。after which(这以后)在定语从句中作状语。介词后的关系代词用which，不能用that，因此，答案是A)。