题文
One Friday, we were packing to leave for a weekend away __________ my daughter heard cries for help.
| A．after |
| B．while |
| C．since |
| D．when |
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One Friday, we were packing to leave for a weekend away __________ my daughter heard cries for help.
| A．after |
| B．while |
| C．since |
| D．when |
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