Module1Changing(变化）Unit1Welivedinasmallhouse.Manyyearsago…很多年以前…Therewerelotsofsmallhouses.有许多小房子•Lifewasverydiff...
Module1Changing（变化）Unit1Welivedinasmallhouse.Traffic（交通）Manyyearsago,thereweren’tanybuses.Now，therearelotsofbusesandcars...
