阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一篇完整的短文。

Leowasalwaysknownasatopstudent.Hespentmostofhistimestudying,andhisgradeswereamongthebestintheclass.However,herarelyjoinedclassactivities.Duringgroupdiscussions,hestayedquiet.Whenhisclassmatesplayedgamesduringbreaks,he