—Hey, who’s that man over there? He us since we came in. —The one by the door? I don’t know. He looks like a lawyer or something, not a journalist. Perhaps he here to look round, like us.A.has watched；only cameB.is watching；had only eC.has been watching；has only eD.had been watching；came
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C解析 本题考查时态。since后接从句,谓语动词用一般过去时,主句动词用现在完成时或现在完成进行时。第二个空是描述的预先在有关的境况，故不用一般过去时。