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

Since then the Castle __________________ It required a lot of money. To pay for it, it was decided to open Buckingham Palace to the public at selected times of the year and to charge visitors a fee.