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L4-U2-P2-1 Listening : Point of View 1 Point of View 1 This man is holdi...
L4-U2-P1-1 Listening : Extinction Events 1 Extinction Events 1 The Earth...
L4-U1-P4-1 Listening : QuickServe 2.0 QuickServe 2.0 Quickserve is a suc...
L4-U1-P3-1 Listening : Harry's Trip 1 Harry's Trip 1 Harry is an America...
L4-U1-P2-1 Listening : A Trip to Yosemite Park 1 A Trip to Yosemite Park...
L4-U1-P1-1 Listening : Visiting a Friend 1 Visiting a Friend 1 Christina...
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