You may believe that you have forgotten the mother tongue you spoke as a child, but your brain hasn't. That "forgotten" first language may well influence ＿＿（6）＿＿ goes on in your brain when you speak English or Japanese today. Researchers from McGill University and the Montreal Neurological Institute describe their discovery that even brief, early ＿＿（7）＿＿ to a language influences how the brain processes sounds from a second language later in life -- even when the first language learned is ＿＿（8）＿＿ spoken. It is an important finding because it tells scientists not only how the brain becomes wired for language, but also how that hardwiring can change and ＿＿（9）＿＿ over time in response to new language environments. The researchers believe that their findings speak to the unique and ＿＿（10）＿＿ influence of early language experience on later brain organization. The information may also be important for creating educational practices geared to different types of learners.