wreckage : the broken parts of a vehicle, building, etc., that has been badly damaged or destroyed.<br/><br/>(<a href='http://www.learnersdictionary.com/definition/wreckage' target='_blank' rel='nofollow'>http://www.learnersdictionary.com/definition/wreckage</a>) <br/>?<br/>I'm not sure whether ', that' is grammatical or not. I think that that should be changed into which.