These days Grade 9 students stay up too late to finish homework and prepare for exams as

问题补充：

These days, Grade 9 students stay up too late to finish homework and prepare for exams, as a result, some of them feel the next day.

A. much too; more tired

B. too much; much tired

C. too much; more tired

D. much too; much tired

答案：

A. much too; more tired

B. too much; much tired

(答案→)C. too much; more tired

D. much too; much tired

解析：句意:这些天，九年级的学生为了完成太多的家庭作业以及为考试准备而熬夜到很晚，结果第二天有些学生感到更疲惫。too much 后跟不可数名词，太多；much too 后跟形容词，太；第二空表示与前些天的比较，故用比较级。故选C。