—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 |
—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 |
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