1.   Amazon has had nearly three years to polish its act.

2.   He polished his act.

3.   The editors at the Harvard Management Communication Letter have scanned the latest business publications for information that can help you polish your act.

4.   Edenstreet continued performing, polishing its act, and recorded a debut album.

5.   Legendary West Indies captain Clive Lloyd says Caribbean cricket needs to polish its act if it wants to recapture past glories.