—Mind your steps as you go, or you’ll fall down on to the wet ground.
—_____________.
| A．Not at all | B．Thank you | C．I don’t | D．Don’t mention it |
—Mind your steps as you go, or you’ll fall down on to the wet ground.
—_____________.
| A．Not at all | B．Thank you | C．I don’t | D．Don’t mention it |
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