Oneday,ateacherwasspeakingtoagroupofstudentsabouthowtom...
問題詳情：Oneday,ateacherwasspeakingtoagroupofstudentsabouthowtomanagetime.Hegavesuchaninterestingexamplethathisstudentswouldnever 31 .Heputawide-mouthjaronthetable.Thenhe 32 somerocksandc...