To learn English is not easy.

To learn English is not easy. To learn English is not an easy thing.和learn English is not （ ） is not easy to learn English well. to learn English well is not too easy同义转换 To learn English well is not easy.(保持意思不变) But it is not easy to learn English well. Is easy to learn english? To learn English is easy. English is easy to learn. Learning English well is not easy和It is not easy to learn en To learn English is not an easy thing.在这个句子learn English is to learn English well is not easy 同义：（） （） （） （） learn Engli