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___________the library for hours without finding anything useful, I turned to my professor for help.
___________the library for hours without finding anything useful, I turned to my professor for help.
admin
2021-06-28
20
问题
___________the library for hours without finding anything useful, I turned to my professor for help.
选项
A、To search
B、Having searched
C、Have searched
D、Searching
答案
B
解析
分析句子结构可知,逗号前后两部分之间没有连词。且逗号后是一个完整的句子,因此空处应用非谓语动词作状语。根据句意可知,search和其逻辑主语1之间是主谓关系,且“查找”这一动作发生在“寻求帮助”这一动作之前,所以空处应用现在分词的完成式,即“having+过去分词"的形式。故选B。
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本试题收录于:
英语题库普高专升本分类
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英语
普高专升本
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