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

Avalanches, also known as snowslides, are not a rare occasion in the mountains. A British family had a lucky escape in the Alps when an avalanche missed _____________ by 20 metres.