请教：老prep 17题

17.  (25497-!-item-!-188;#058&001948)

Rejecting the apprenticeship model of training social workers in philanthropic agencies, twentieth-century reformer Edith Abbott was convinced of social work education belonging in the university so that students could be offered a broad range of courses dealing with social issues.

(A) of social work education belonging in the university so that

(B) that social work education should be in the university, and that

(C) about the importance of social work education belonging in the university while

(D) that social work education belonged in the university, where

(E) of the necessity of social work education being in the university and

只是觉得从语气上判断应该有这层意思“social work educaiton 应该....”

这下明白了，主要是当时不理解belong in 的意思。

在做题过程中发现很多固定的词组不知道，这个问题怎么解决呢？

谢谢啦~