Amanwantedtobecomewealthy.Hewastoldastoryonedaythatther...
问题详情：Amanwantedtobecomewealthy.Hewastoldastoryonedaythattherewasa ___18___ pebble （鹅卵石） amongthepebblesonthebeachoftheBlackSea.Itcouldturneverythingittouchedinto ___19___.Thispebblecouldbe _...