Question: when did hong kong become part of china
Answer: 1997-07-01; 1997 July, 01; 07-01-1997; 01/07/1997; 07 01 1997; 1997 July 01; 07/01/1997; 1997 07 01; 01 07 1997; 01-07-1997; 01 July 1997; 1997-07-01