tomisanyothersutdentinhisclass
tomisanyothersutdent.inhisclass
a.thesamebrightasb.asabrightboyas
c.sobrightaboyasd.asbrightaboyas
iwon'tgototheparty.invented.
a.withoutbwhetherc.unlessd.notbeing
请介绍一下为什么这样选行么?