Final answer:
London was constantly fired on during World War II, resulting in the deaths of many civilians.
Step-by-step explanation:
The British city that was constantly fired on, killing many civilians, during World War II was London. London was a major target for German bombing raids, particularly during the Blitz, which lasted from September 1940 to May 1941. These bombing raids resulted in extensive damage to the city and caused the deaths of at least 40,000 civilians.