. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.
| A．Waiting | B．To wait | C．Having waited | D．To have waited |
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. __________ in Hangzhou station for two hours, the old man eventually caught the last train to go back to his home in Huangyan.
| A．Waiting | B．To wait | C．Having waited | D．To have waited |
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