I guess you should ________ what you ________ to bring a small present.A.have asked, were supposedB.ask, are supposedC.have been asked, are supposedD.have asked, are supposed
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A解析should后面接现在完成时态，这时候句子指的是过去的事情，如果是肯定句，说明案件事本应完成而未完成，如果是否定句，则表示发生了不应该发生的事情。