it is important learn 中间不加to行不行

it is important learn 中间不加to行不行 To learn English well is important不加to行不行 We think it important to learn English well.it后为什么不加is it is important to learn English It is important ______us to learn English. It is important to us (learn)English how important it is to learn English. It is important for you to learn to speak English It is vert important for you to learn to drive 英语翻译To learn something effectively,it is important to "make why is it so important to learn English 作文 英语翻译Is it important to learn a second language?