单选题 The hard truth is that______ Lucy , ______ her twin sister haven't yet done enough to get a passing grade for the course.

【正确答案】 A
【答案解析】本题测试固定结构。both．．．and．．．意为“两者都……”。本句大意为；严峻的事实是露茜和她妹妹都没有及格。