they found ( ） hard understand this story

they found ( ） hard understand this story This story is hard to understand.or to be understood 英语方面问题（1）I found it hard to understand this sentence.----why This story is hard to understand,( )there are no new words i They found the lecture hard ( ).A.to understand B.to be unde They found the lecture hard to understand.为什么不是“to be unders 英语翻译1.He found it hard understand and her explanation_______ they found the lecture hard ____. They found the article was hard ( ) I found his story hard to believe.翻译下 i found it hard _____(understand ) him为什么要填to understand I found it hard ___(understand) him. 填什么?为什么?填to understand