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

Tom had often told ______, "If only we had sidewalks, we would jog or walk daily and become models of fitness".