Об­ра­зуй­те от слова BELIEVABLE од­но­ко­рен­ное слово так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

We came back to the Falls at night to see the light display. Hundreds of lights that __________________ changed their colour were directed on the Falls.