Ifyougoouttothefield的精選

問題詳情：Ifyougoouttothefieldsatnightspringorsummer,youcanhearsinging  61 (happy)hereandthere.Itseemsasiftheywereperformingafieldconcert.Thefrogisabeneficialcreaturethatdoesgoodtohumanbeings.Theycan...