阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Have you heard of Lake Titicaca? It is a famous lake in South America, which is located on the border between Bolivia and Peru. But the lives of the ancient people who once lived around the lake and ____ culture was thought to be highly advanced, have long remained a secret. Recently, ____, scientists taking part in an exploration project at the lake have found ____ they believe to be a 1000-year-old temple ____ the water.
Divers from the study group have discovered ____ building scientists think is the remains of a temple built by the people who once lived beside the lake. The project leaders hope to begin raising important materials from the site later this week ____ bad weather forces a change in their plans.
"The scientists have not yet had the opportunity to study the materials carefully," said project director, John Aubi. "But some ____ (put) forward the idea that the remains date from this period because of their ____ (similar) to those found elsewhere."
The research team has so far this year made more than 200 dives into water 30 metres deep. During these dives, ____ have been recording the ancient remains on film. There will be a meeting, ____ (start) later this year to review the film.