So many directors_________ , the board meeting had to be put off till next Monday

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So many directors_________ , the board meeting had to be put off till next Monday.

A. were absent

B. being absent

C. been absent

D. had been absent

参考答案:

B本题考查独立结构。-ing分词结构用在此处表示原因。题干的意思是:“由于许多董事都不在,董事会只能推迟到下周一了。”