—Don't throw paper on the ground, please
问题:
—Don't throw paper on the ground, please. — ______. [ ]
A. It doesn't matter
B. I'm sorry
C. Excuse me
D. That's all right
—Don't throw paper on the ground, please. — ______. [ ]
A. It doesn't matter
B. I'm sorry
C. Excuse me
D. That's all right