they all felt sleepy because they found the lecture hard----

they all felt sleepy because they found the lecture hard---- they found the lecture hard ____. 英语单选题 They found the lecture hard ( ) 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 They found the lecture hard . 　　A. to be understood B. to un They found the article was hard ( ) They all looked ( )at the matter and felt quite( ). they all looked_____at the old woman and felt quite____a.sad They all looked( )at the master and felt quite( ). to their surprise,they found the lecture given by the famous They felt the food __ __because they are all hungry.他们感觉这些食物