【題目】Much time _____ sitting at a desk, office workers are generally troubled by health problems.

A. being spent B. having spent

C. spent D. spending

【答案】C

【解析】

試題分析：句意：上班族們坐在辦工座前太久，一般會受到健康問題的困擾。分析句子結構可知，分詞的邏輯主語和后面主句的主語不一致，應用獨立主格結構。分詞主語和分詞動作之間構成邏輯上的動賓關系，且動作已完成，故用過去分詞。故選C項。

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