PEP8 Unit 4 Then and now B Read and write,火眼金睛,people,could,fast,run,slow,drink,second,was,dream,cheetah,cheetah,The cheetah can run very fast,ti:t,Present Past,现在 过去,clean,stay,play,wash,watch,cleaned,stayed,played,washed,watched,Present Past,现在 过去,cry,study,worry,carry,copy,cried,studied,worried,carried,copied,Present Past,现在 过去,stop,plan,trip,beg,shop,stopped,planned,tripped,begged,shopped,Present Past,现在 过去,have,is/am,are,can,run,had,was,were,could,ran,feel,think,felt,thought,dream,1,3,2,Wha
