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Lesson 1{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-01.mp3{/audio}
Lesson 2{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-02.mp3{/audio}
Lesson 3{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-03.mp3{/audio}
Lesson 4{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-04.mp3{/audio}
Lesson 5{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-05.mp3{/audio}
Lesson 6{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-06.mp3{/audio}
Lesson 7{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-07.mp3{/audio}
Lesson 8{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-08.mp3{/audio}
Lesson 9{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-09.mp3{/audio}
Lesson 10{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-10.mp3{/audio}
Lesson 11{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-11.mp3{/audio}
Lesson 12{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-12.mp3{/audio}
Lesson 13{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-13.mp3{/audio}
Lesson 14{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-14.mp3{/audio}
Lesson 15{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-15.mp3{/audio}
Lesson 16{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-16.mp3{/audio}
Lesson 17{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-17.mp3{/audio}
Lesson 18{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-18.mp3{/audio}
Lesson 19{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-19.mp3{/audio}
Lesson 20{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-20.mp3{/audio}
Lesson 21{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-21.mp3{/audio}
Lesson 22{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-22.mp3{/audio}
Lesson 23{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-23.mp3{/audio}
Lesson 24{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-24.mp3{/audio}
Lesson 25{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-25.mp3{/audio}
Lesson 26{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-26.mp3{/audio}
Lesson 27{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-27.mp3{/audio}
Lesson 28{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-28.mp3{/audio}
Lesson 29{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-29.mp3{/audio}
Lesson 30{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-30.mp3{/audio}
Lesson 31{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-31.mp3{/audio}
Lesson 32{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-32.mp3{/audio}
Lesson 33{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-33.mp3{/audio}
Lesson 34{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-34.mp3{/audio}
Lesson 35{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-35.mp3{/audio}
Lesson 36{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-36.mp3{/audio}
Lesson 37{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-37.mp3{/audio}
Lesson 38{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-38.mp3{/audio}
Lesson 39{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-39.mp3{/audio}
Lesson 40{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-40.mp3{/audio}
Lesson 41{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-41.mp3{/audio}
Lesson 42{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-42.mp3{/audio}
Lesson 43{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-43.mp3{/audio}
Lesson 44{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-44.mp3{/audio}
Lesson 45{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-45.mp3{/audio}
Lesson 46{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-46.mp3{/audio}
Lesson 47{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-47.mp3{/audio}
Lesson 48{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-48.mp3{/audio}
Lesson 49{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-49.mp3{/audio}
Lesson 50{audio}listening/audio/toeflibt/buildingskills/chapter1/Building_IBT_LC_1_Track-50.mp3{/audio}