English is a universal language. That''s why students must be able to master it both for daily communication and gaining the knowledge. In order to gain their mastery, they must have a source book that can fulfill their needs of learning activity. English Basic Task (EBTA) for Senior High School is kinds of source book for senior high school students. There are many materials and exercises to master the English. Reading this kinds of source book will extend your competence in mastering the English.
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