parents found it is difficult/it difficult/it was difficult to teach children.说明选择原因

parents found it is difficult/it difficult/it was difficult to teach children.说明选择原因 where is it commonly found?不要翻译机 I found it hard to understood为什么不是I found it is hard to understood I found it impossible to answer all the questions.请问为什么不是found it is impossible? now it is in the lost and found case.翻译 He found it difficult to sleep.为什么is省略? it is found out是什么意思?另请举两个例句 I just found that it is a.or ad.only. His parents found _____A.it necessary B.that necessary C.it is necessary D.necessary我很奇怪,为什么答案是A?C咋地就不可以拉?it...和it is.有什么区别?后面的是to tell him everything that had happend 英语翻译It is very good ( ) parents ( )（ )( ) children usually is ,parents ,going,it,how.with,your连词成句 It is 11:pm.you should say ( )to your parents so now here lies the duty of parents .it is the parents responsib Jim is a boy of fifteen.His parents died three years ago and he had to make a living (谋生) by himself.One day,when he was walking in the street,he found a wallet full of money.He found the owner,Mr.Jackson,and returned it to him.Mr.Jackson thanked 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? it is ...since ..为什么不用完成时it is 100 years since Qinghua university was found. it is found on every continent except Antarctica and it is migratory except in Australia.3841 we found it necessary to protect the earth 为什么用it 而不是it is