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B7 时态和语态 热点·4 ①(2017·天津卷)The letters for the boss ________on his desk but he didn't read them until three days later. re put B．was put C．put D．has put 答案 A [句意：给老板的信放在他的桌子上，但他三天后才读。考查动词的时态、语态和主谓一致。根据语境及but分句的时态可知前半句也应该用过去时，故排除D项；又因为letters同put之间为被动关系，故排除C项；根据主语letters为可数名词复数可知B项不正确，所以选A项。] (2011·北京卷)Experiments of this kind ________in both the ． A．have conducted B．have been conducted C．had conducted D．had been conducted 答案 D [句意：早before the Second World War可知，应该用过去完成时态，故排除A、B两项。再根据谓语动词conduct和主语experiments之间为逻辑上的动宾关系可知，本题选D项。] (2011·安徽卷)—What do you think of store shopping in the future? I think it will exist along with home shopping but ________． A．will never replace B．would never replace C．will never be replaced D．would never be replaced | 
