题目内容
________ about the student,the teacher called his parents to find out why he was so often absent from class.
A.Concerning B.Concern
C.Concerned D.To concern
C 考查分词作状语的用法。be concerned about意为“为……担心”。因为两个部分的主语一致,所以其前省略了主语和系动词be。句意:因为担心这名学生,老师打电话给他的家长想查明他为什么如此经常地逃课。

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