cisco dhcp中继:I found it impossible to answer such a question in class.帮忙划分句子的成分

I opened my wallet and found it empty ,这个是什么意思 I found it hard to understand him . 中it 后可以加上is 吗?为什么? I found it impossible to answer such a question in class.帮忙划分句子的成分 I found it was …… 这个句型谁能告诉我一些知识阿 I also found that it is important to get along well with others I found a wallet l____ on the ground and there was lots of money in it 改错：It sound like the flowing of water . Suddenly I found I found no stunts there I found I really need You I found I really need You