Learning a foreign language has changed. Not long ago, students would sit with pens in hand, writing the basic forms of a language, learning structures they would never be able to speak. In that same classroom today, pens and notebooks have been put away. The spoken sounds of foreign tongue fill the room. Today the last skill learned--writing a foreign language-- comes as a natural and possible part of the total language-learning process. Yet, just a few years ago, the last skill learned was the first skill mastered today-- speaking a foreign tongue. To visit some foreign countries, travelers have to apply for visas. Which sentence can be omitted?