Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово CAN NOT так, чтобы оно грам­ма­ти­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

But once she and Mr. Wolf and their son and daughter were out in the summer woods, they ______ find the right spot.