- 问题详情:Look,asetofkeys________ontheteacher'sdesk.A.are B.were C.is D.was【回答】C点拨:此题考查主谓一致,由句意“看,讲桌上有一串钥匙。”可知谓语动词应使用一般现在时;主语asetofkeys的中心词是...
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- 问题详情:Asetofkeys________onthedesk,andsomeboxes________onthedesk,too.A.is;is B.are;areC.is;are D.are;is【回答】C点拨:本题可用主谓一致法解答。asetof作主语时,谓语动词的数与set保持一致,故第一空用is;第二空...
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