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

It ______ a tradition for husbands to do all house work on that day. There are many jokes about it being the only day of the year when they do this.