题文
If you cannot come to the meeting, please let us know ______ so that we will cancel your hotel booking.
| A．in general | B．in advance | C．by chance | D．by accident |
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If you cannot come to the meeting, please let us know ______ so that we will cancel your hotel booking.
| A．in general | B．in advance | C．by chance | D．by accident |
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