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() seems to have been great difficulty in becoming top gradu

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() seems to have been great difficulty in becoming top graduates.
A,That B,What C,Which D,There
D.别看见have 就判定不用there be,这里的have是完成时,不表示有,可以把句子简化分析,have been 相当于is,seem to 似乎,暂时去掉,所以就可以为:
There is great difficulty in becoming top graduates.现在不就是there be句型了吗?