问题
选择题
—Where are the papers for the Smith project?
—They are in the folder ________ “S”.
A.marking
B.marked
C.to be marked
D.to mark
答案
答案:B
答案:B 考查非谓语动词。句意为:——史密斯工程需要用到的那些文件放到哪里了?——它们被放在标有“S”标记的文件夹里。folder和mark之间是动宾关系,所以要用过去分词形式marked。故答案选B。