--Is there a post office near here? -- ____ .
| A．No, it isn’t | B．Yes, there isn’t |
| C．Sorry, I don’t know | D．No, there is |
--Is there a post office near here? -- ____ .
| A．No, it isn’t | B．Yes, there isn’t |
| C．Sorry, I don’t know | D．No, there is |
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