They found the lecture hard ( ).A.to understand B.to be understand C.being ...They found the lecture hard ( ).A.to understand B.to be understand C.being understood D.understood

问题描述:

They found the lecture hard ( ).A.to understand B.to be understand C.being ...
They found the lecture hard ( ).A.to understand B.to be understand C.being understood D.understood

They found ···后面的不是完整的句子 “ the lecture hard ( ).”应该是充当句子的状语之类的
要我选的话就是C