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

Nowadays Teotihuacan is visited by millions of people every year. Archeologists are sure that it _____ popular in the future being a must-⁠see if you’re in Mexico City.