aboutthestudent,theteachercalledhisparentstofindoutwhyhewassooftenabsentfromclass.A.ConcerningB.ConcernC.ConcernedD.Toconcern
________ 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
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