A rogue loose called a hacker could take control of the entire system by implanting his own instructions in the software and the

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问题 A rogue loose called a hacker could take control of the entire system by implanting his own instructions in the software and then he could program the computer to erase any sign______.

选项 A、of his being ever there
B、he ever has been there
C、of his having ever been there
D、of him having ever been there

答案C

解析 分析本题可知,空格处的主语是动名词,所以此处应该用名词与代词的所有格形式,并且动名词所表达的事件应先于被修饰词,应用动名词的完成时形式。由此可知本题答案为C。
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