The books are colorful Unlock3 to interesting, teaching in listening and speaking. Within the book have to do lots of exercise. For use in the English-language skills, but is expensive. In books and teaching at least makes no sense with the price of the book worthwhile. In order to use the book to have been highly effective. Must be used in conjunction with technology such as computers open to Internet video clips for practicing listening and reading, which all students don't have everyone of these technologies. Thus, a student may be given the opportunity and the knowledge is not created equal. In most of the online class, there are lots of games and exercises to allow students to practice and develop their own, but students are required to have a computer or Smartphone and Internet members. In order to be able to access the practice. Cause difficulties for students who do not have these technologies.
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