外研社小学英语四年级下册M8U1

Itwasaneggthen.Nowitisachick.Itwaslongthen.Nowitisshort.Itwas…then.Nowitis….Shewasyoungthen.Nowsheisold.Hewasthinthen.Nowheisfat.Hewas…then.Nowheis….Theyweretodpolesthen.Nowtheyarefrogs.Theywereyoungthen.Nowtheyareold.Theywere…then.Nowtheyare….请大家提出宝贵建议，谢谢