—The teacher asked me to hand in our exercise books to her after class.

—________. I left mine at home.

A. Don’t mention it.       B. Forget it           C. Oh, my goodness

魏晋南北朝、隋唐：

唐代日本来唐学习的人员可分为三类，分别是遣唐使、留学生和学问僧。