5. Put the verbs in brackets into past perfect or past perfect continuous. In 1990, two friends, Robert and Barry, managed to survive the harsh conditions of the Sahara desert alone for two days. The two friends 1) ___ (enrol) in the Marathon of the Sands, which was a seven-day foot race through the Sahara desert. Before the competition began they 2) ___ (pack) all the food, clothing and supplies they needed on their desert adventure in large rucksacks, which they carried on their backs. On the first day of the event, the two friends 3) ___ (walk) in the desert for a few hours when all of a sudden a sandstorm appeared out of nowhere. They had nowhere to take cover. Robert opened his rucksack only to realise that he 4) ___ (forget) to pack their compass. Terrified, the men sat in the middle of the sandstorm and waited for help to arrive. They 5) ___ (wait) for two days before the organisers of the event realised that the two men were missing.

Перевод задания: Поставьте глаголы в скобках в форме прошедшего совершённого или прошедшего совершённого длительного времени.

1. The two friends had enrolled in the Marathon of the Sands. (Два друга записались на марафон.)
2. Before the competition began they had packed all the food, clothing and supplies they needed. (До начала соревнования они упаковали всю необходимую еду, одежду и припасы.)
3. The two friends had been walking in the desert for a few hours when a sandstorm appeared. (Друзья шли по пустыне несколько часов, когда появилась песчаная буря.)
4. He had forgotten to pack their compass. (Он забыл положить компас.)
5. They had been waiting for two days before the organisers realised that they were missing. (Они ждали два дня, прежде чем организаторы поняли, что мужчины пропали.)