I think _ very necessary that one learns a foreign language

I think _ very necessary that one learns a foreign language It is important and necessary that one----a foreign language it is necessary that a collage student _ a foreign language I think it’s very空(use) to learn a foreign language well I think that it's a useful to learn a foreign-language. I think that it is important to master a foreign language.(同 I think that it is important to master a foreign language.(改 I think that it is important to master a foreign language.（同 英语翻译People always say that the earlier one learns a language It is necessary that we ___a foreign language. 1.Is it necessary __________ (learn) a foreign language? I think ____ necessary for a student to master a foreign lan