这是一个什么句，是怎么翻译的,是如何划分句子成分的,thanks
94. Over 20 workers were hired to clean the walls and windows, ____ had not been cleaned since 1950. A. which B. that C. where D. there
答案选A。这是一个非限制性定语从句，主语是 Over 20 workers，谓语动词是were hired ，to clean the walls and windows 作目的状语，逗号后面的 which had not been cleaned since 1950是非限制性定语从句,修饰逗号前的 the walls and windows，起解释说明的作用。句意为：有20多位工人被雇来清扫墙壁和窗户，这些墙壁和窗户自20世纪50年代以来就一直没清扫过。
答：Theworkersincapitalistcountriesarecruelly__exploited___ ayedD.exploded1)简单句,2)资本...详情>>
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