In 1940, four French teenagers made an important discovery in the Dordogne area. They found a cave full of prehistoric paintings which gave _____ of the animals alive thousands of years ago. The exact date of the paintings is still a _____ but they are of great _____ because they are very early examples of art. The _____ of the case revealed hundreds of images including horses, bison, and bears. _____ now monitor the paintings to keep them in good condition. (Evident, explore, important, mysterious, science).
2.important
3.science
4.mysterious
5.evident