I found it difficult that I learn English 句中的difficult是宾语补足语

I found it difficult that I learn English 句中的difficult是宾语补足语 i found it difficult to learn english well哪个是宾语 I found that it was difficult to learn English.中that 可以省略吗? I found ( )difficult to learn English grammar I found it difficult to learn English well 同义句 __was difficu i found that it is difficult to speak english well.的同义句 English is so difficult that I can't learn it well.(改为简单句) 为什么是“I find it difficult to learn English well?" She found it difficult to learn English?同意句转换 I found ______ difficult to learn English well I found ____ difficult to learn English grammar. I found difficult to learn English grammar.A it Bthat Cit is