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When______at the door she was given a warm welcome.A．appearsB．appearingC．to appearD．appea

2020-09-24 23:32:53 学历考试 阅读

问题详情

When______at the door, she was given a warm welcome.

A．appears

B．appearing

C．to appear

D．appeared

请帮忙给出正确答案和分析，谢谢！

参考答案

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