It is a common ____ to have a cake with candles to celebrate a holiday ，birthday or any other occasion.

Although the city had been attacked by the storm several times, ＿＿＿＿＿was done．

. New mineral resources may be discovered during the forthcoming Antarctic _____.

The young woman rushed to the hospital ________ she heard the terrible news.

The pursuit of happiness is just a/an________of personal choice.