Gasparilla's Treasure 國中生尋寶歷險記

[Sorry! This book is still worth reading, but the free promotion period is over]
Gasparilla's Treasure (187 page free book with real narration for only $1.99!)
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The grandfather's voice at the beginning is done with a Southern accent. Some EFL learners might have difficulty understanding the grandfather speaking in the audio version, but this is only a small part of the story.