The chief executive officer is particularly______ that recent staff surveys have shown a severe drop-off in employee satisfactio

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问题 The chief executive officer is particularly______ that recent staff surveys have shown a severe drop-off in employee satisfaction.

选项 A、concern
B、concerns
C、concerning
D、concerned

答案D

解析 concern既可作及物动词,表示“使担心,使忧虑”,又可作名词表示“关心;忧虑”的名词。concerning虽然词形像现在分词,其实是表示“关于,涉及”的介词。concerned表示“关心的,有关的”,一般用于be concerned about/for/with sth.或be concerned+that从句。
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