2. 外语
  3. Some parents are only concerned ______ their children’s grades in studies.

Some parents are only concerned ______ their children’s grades in studies.

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问题 Some parents are only concerned ______ their children’s grades in studies.
选项 A、of
B、at
C、about
D、for
答案C
解析 考查固定搭配。concern常与with，about连用表示“关心，关照”，故选C。
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