In the last sentence of the paragraph the author states that

                                                     TEXT II

                                      LANGUAGE TEACHING

Languages are taught and learned in various places, some in informal settings, others in formal contexts, such as classrooms. It is common knowledge that regardless of the method used, second language learners achieve mastery of the target language to varying degrees. Although 10 individuals may be in the same language class for a year, their eventual proficiency level and profile will be different from one another. This is the result of a combination of the factors briefly mentioned above, compounded with the pedagogical methods that the learner has encountered. Generally speaking, it can be stated that most individuals learn to communicate basic information through a conversation in the target language in the first few years of active language study (provided that there are opportunities to use the language to create personal meaning). It is important to note that mere exposure or contact with the target language in most cases is not sufficient to result in productive language skills.

                                  (http://www.aeservices.net/English/newsletters/Oct2007.html#B2)