-Please don't throw paper on the ground. - _________, I won’t. A． Excuse me B． That's

-Please don't throw paper on the ground.
  - _________, I won’t.
A． Excuse me    B． That's all right
C． Sorry    D． It doesn't matter
【答案】C
【解析】
考查日常交际用语。Excuse me意为“打扰了”；That’s all right意为“不用谢”；Sorry意为“对不起”；It doesn’t matter意为“没关系”。故选C。