The old couple were seen (take) ______ a walk in the park everyday after supper.

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问题 The old couple were seen (take) ______ a walk in the park everyday after supper.

选项

答案to take

解析在主动语态中，短语see sb.do sth．为省to不定式作宾语补足语，但在被动语态中省略的to必须还原，连接前后两个动词，所以填入动词不定式to take。

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大学英语三级B级

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