【单选题】【消耗次数：1】
He has been there, [填空]?
①
hasnt he
②
has he
③
does he
④
doesnt he
参考答案：
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相关题目
【单选题】
Does Robert have [填空] computer? —Yes,he has [填空] ．
①
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②
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【判断题】
Ever since he arrived, he has been complaining constantly about the weather.
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Its ( ) that he has been away from home.
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he park has been built and it will be open _____ three years
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④
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She was wondering whether he has been writing anything new ____
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随机题目
【单选题】
以下关于MD5说法错误的是？
①
MD消息摘要算法是由Rivest提出，是当前最为普遍的Hash算法，MD5是第5个版本。
②
生成128位的消息
③
MD5算法以一个任意长度的消息作为输入
④
输入消息是按256位的分组处理。