问题描述：
Peter was one of the first teachers in his country___disabled students．．．
Peter was one of the first teachers in his country___disabled students to pursue secondary education.
A.encouraged
B.encouraging
C.being encouraged
D.to encourage
选D 为什么其他的不对?
Peter was one of the first teachers in his country___disabled students to pursue secondary education.
A.encouraged
B.encouraging
C.being encouraged
D.to encourage
选D 为什么其他的不对?
问题解答：
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