单选题 Why did she feel guilty? [A] She had to work instead of doing homework. [B] She spent all her time sleeping. [C] She spent all her time reading stories online.
【正确答案】 C
【答案解析】[分析] 细节题。从文中第三段第三句可知，作者惭愧是因为她把时间都花在在网上读小说上了。