#背诵为王第一册 Unit42::Two Goats on the Bridge 搜索结果
42TwoGoatsontheBridgeOnedayagoatstartedtocrossalittlebridge.Atthatveryminute,anothergoatstartedoutfromtheothersideofthebridge.Whentheysawoneanother,theyknewthatoneofthemwouldhavetogobac