I heard that footprints of an abominable snowman were found in the Himalayan mountains.
- I heard that footprints of an abominable snowman have been discovered in the Himalayas.
Tom found out that life on the road wasn't as easy as he thought it would be.
- Tom discovered that life on the road wasn't as easy as he thought it would be.
... discovered in the nineteen eighties by travelers searching for a simple life ...
... been discovered that the educated can follow, that improve their health and improve their ...