Sentence:  One day , Ching had told him ( smiling , patting him on the back ) as they walked to the weekly conference of squad leaders , `` Keep it up , your squad is good , one of the best , keep it up , keep up the <WSD>good</WSD> work '' . 
Meaning of the word marked with <WSD> tags:  having desirable or positive qualities especially those suitable for a thing specified