Kamide, another graduate student, agreed that it is no longer taboo to show up late: Today's taboo, Kamide presumed, is to forget your mobile phone or let your battery die.

Kamide, another graduate student, agreed / that it is no longer taboo to show up late

Today's taboo, Kamide presumed, is / to forget your mobile phone or let your battery die.

주어(콤 설명하는 말 콤) 동 ~~