I find it's difficult to learn English well.改同义句 I find it _

I find it's difficult to learn English well.改同义句 I find it _ I find it difficult to learn math well.改同义句.I find____ ____ I find it difficult to learn English well【改简单句】 I find it difficult to learn math well.改同义句 i find it easy to learn English well 同义句 为什么是“I find it difficult to learn English well?" I find it difficult to learn English well的复合句 I find it difficult to learn English well,Professor Smith 将“I find it is useful to learn English well"转换成同义句"I find -- I find it quite easy to learn English well.(同义句转换) I find it is easy for children to learn English well.(改为同义句） I find it difficult to learn English well.这里,为什么不是it is diff