Teacher: You're late again!

Student: Sorry, ______

A. I won't do that anymore.

B. but it's my own business.

C. I’m afraid I've overslept.

D. but I need more sleep.

［答案］C

【精析】老师批评学生又迟到了，学生表示歉意。选项B（这是我自己的事情）、D（但我需要更多睡眠）回答不够诚恳；选项A（我不再迟到了）过于死板；只有选项C（恐怕我睡过头了）解释了迟到的原因，承接比较自然。