i found this problem are easy ________A.to be worked out B.to work them outC.to work out D.to be worked them outc翻译并分析其他的为什么不选?

i found a different way to ____ this problem I found it impossible to work out this maths problem 不加be动词也对么/?为什么 I found dealing with the problem difficult.同义句 I found it 填空 填空 the problem. I found that diffcult to work out the problem 改错 I found it easy (to work) out the problem in this way. 括号内为什么是to work?而不是work的其它形式谢谢啦. I have found many helpers ____ with this tough problem.A.to deal B.dealt C.deal D.dealing这道题怎么说明原因 I have a problem __ this watch. I hope you have found this useful 我解决了这个问题.是I finish this problem.还是 I finished this problem,还是别的 A solution to this problem is expected to be found before long为什么用过去式啊?expected to be found we found this problem difficult to solve solve为什么不用被动 i wish i __(know)how to solve this problem. I found it difficult.等不等于 i found it is/was difficult?kankanI found it difficult to solve the problem.等不等于 i found it is/was difficult to solve the problem? I found that it was difficult to do the math problem.（改为简单句）I found [ ] [ ] to do the math problem. I found he_______(explain) the problem to his students when I walked into his office. I found this computer game_______ to playI found this computer game_easy_ to play为什么不用easily不是修饰 found i found this problem are easy ________A.to be worked out B.to work them outC.to work out D.to be worked them outc翻译并分析其他的为什么不选? find sth to be adj.有没有这个词组我看到的句子：I found this book to be very useful to anyone who has a problem with a sad child.如果有,请举一些例子