---When shall we meet to have a further discussion?---_______.A.At any time when it is convenient to youB.At any convenient timeC.At your convenienceD.A,B and C
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D解析convenient作宾语时,它的主语只能是事情或时间,常用形式主语it作主语,人不能作主语。B和C项也是较常见的说法:B项指“在任何方便的时间”;C项指“看你的时间,只要你方便”。