Best Friend 코스북-mp3 음원 자료입니다. 

Starter1 / Starter2 / Starter3 / Starter4 

자료다운 : http://keymapenglish.ezconn.net/board/BF_Starter-mp3.zip 

ALPHA1 / BETA1 / GAMMA1 / DELTA1 / EPSILON1

자료다운 : http://keymapenglish.ezconn.net/board/BF_Book1-mp3.zip

ALPHA2 / BETA2 / GAMMA2 / DELTA2 / EPSILON2

자료다운 : http://keymapenglish.ezconn.net/board/BF_Book2-mp3.zip

ALPHA3 / BETA3 / GAMMA3 / DELTA3 / EPSILON3

자료다운 : http://keymapenglish.ezconn.net/board/BF_Book3-mp3.zip

ALPHA4 / BETA4 / GAMMA4 / DELTA4 / EPSILON4

자료다운 : http://keymapenglish.ezconn.net/board/BF_Book4-mp3.zip