Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово I так, чтобы оно грам­ма­ти­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

"I’ll be very happy when I no longer have to wear my braces," Alex said. "__________________ too," his mother replied

tiredly.