Matchthewordswiththeirdefinitions

basedonWBp.32, ex.5

courageous	from time to time
fascination	giving satisfaction, joy
author	brave
investigation	the ability to interest sb.
murmur	normal, usual; true for most cases
source	systematic examination, research
occasionally	a person who writes a piece of literature
general	a thing or person that provides sth. (e.g. information)
rewarding	say quietly and unclearly