Onceuponatime,ahippo(河马)livedinarivernexttoabigtree.One...
问题详情:Onceuponatime,ahippo(河马)livedinarivernexttoabigtree.Oneday,abirdcameandnested(筑巢)inthetree.Thesongsofthebirdfilledthehippowithsomuchenvy(羡慕)thathecouldn’tthinkofanythingelse.Everydayhewouldthinkwh...