Many neighboring countries are guaranteed to score points. Multi-neighboring countries guarantee points refer to multi-neighboring countries guarantee points. Like IELTS and TOEFL, many neighboring countries are divided into two types of institutions. One is a training institution that buys courses, which is suitable for students with strong learning ability and good foundation. One is a direct scoring institution, which is suitable for students with poor learning ability and poor foundation. Duolingo is a language learning tool software with more than 500 million downloads of its App. 20 1 1, many neighboring countries were established in Pittsburgh, USA.