题文
Is there anything ______?
| A．you are not sure |
| B．about which you not quite sure |
| C．that you don’t understand |
| D．which you don’t understand |
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Is there anything ______?
| A．you are not sure |
| B．about which you not quite sure |
| C．that you don’t understand |
| D．which you don’t understand |
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