Yaster,aninternationalstudent,firstmetSteveintheirchemi...
问题详情：Yaster,aninternationalstudent,firstmetSteveintheirchemistryclassatanAmericanuniversity 41.Steve seemedveryfriendly.Healways 42 Yaserwarmly before class.Sometimeshe 43 tostudywithhim.He...