【正确答案】 C

【答案解析】[听力原文]
   W: Do you know when Lucy comes back home?
   M: She is supposed to arrive this weekend, but actually she's coming back the day after tomorrow.
   Q: When will Lucy come back?
[考点] 细节题
问题问的是露西什么时候回来?根据男士所说She is supposed to arrive this weekend，but actually she's coming back the day after tomorrow可知，Lucy后天才回来，即两天后。故选C。