题目内容：

You probably 1. (hear) that all legends have a basis in fact. That may not be true, but this bizarre legends is.

Recently, the people of Switzerland began telling stories about a 2. (mystery)figure who walked through the Maules Forest 3. (wear)camouflage (伪装)and a gas mask. For ten years, there was no evidence 4.this figure existed; just a few eye witness accounts in the newspapers. According to those 5. (account), he didn’t show any signs of being dangerous or malicious, but he sure was creepy. With no concrete evidence of his existence, the figure remained in the realm of folklore. People began calling him"the ghost of Maules" or"Le Loyon. " In 2013, 6.，his existence was proven when 7.pedestrian took the photograph of Le Loyon. A few months later, his gas mask and camouflage coat appeared in the woods, 8.a strange note hinting that he was harmless and could no longer stand 9. (view)as some kind of monster. Whether Le Loyon actually committed suicide or simply abandoned his persona and wandering habits 10. (remain) unknown. These are some of the most bizarre unsolved mysteries of all time.