Focus (Student’s Book) – 1, 2, 3, 4

Focus is an even richer version of the best-selling English language learning series for upper secondary students.

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http://usafiles.net/1rDt/focus_1_elementary_students.pdf

http://usafiles.net/1REo/focus_2_second_edition_preintermediate_stude.pdf

http://usafiles.net/1rDr/focus_3_intermediate_students.pdf

http://usafiles.net/1rDs/Focus_4_students_book.pdf