It is n_ to learn English well in the 21st century

It is n_ to learn English well in the 21st century it is n_ for you to sleep eight hours every day. It is interested to learn Eglish.改错 Is it necessary to learn grammer It is never too old to learn. It is a great piace to learn It is easily to learn swimming.改错 she is vey diligent to learn it. is it difficult to learn Japanese? It is important to us (learn)English Both of us n_ time to think it over. It is hard work to learn English.（意思不变再写一句） It is( )( )( )to learn English. it is important for him to learn to read.如何解析“to learn和to read? It is important for you to learn to speak English It is () for us to learn to wait in line it is e______ to learn something,but it is d_____ to use it to solve problem It is easier young people English.A.to,learn B.to,to learn C.for,to learn 句子it is important to learn english,为什么这么安排,而不是learn english is important