题目内容
To their disappointment, they found the lecture given by the professor difficult__________.
A. to be understood B. to understand
C. understanding D. understood
B
【解析】
试题分析:句意:使他们失望的是,他们发现教授的讲座难以理解。Find sth+形容词+to do故选B。
考点:考查固定句型
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