The custom is ‘popular’ now. Here synonym of ‘popular’ is-

The news of President Zim's death astonished the world. Choose a word which would best keep the meaning of the given sentence if it was substituted for the word 'astonished'. 

The antonym of 'Scarcity' is:

Choose the word that is the opposite of 'relaxed'

The winning team of the World Series often has a jovial attitude. Jovial means