Theofficerwasveryconcerned________thelatestdevelopmentinthecasebecause

发布时间：2020-08-04 16:06:26

The officer was very concerned ________ the latest development in the case because he was concerned ________ it.A.about; inB.for; aboutC.with; forD.in; with

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A解析A(解析：考查介词。be concerned about“关心”．be concerned in “涉及，与……有关”。选A。)
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