When natural disasters ....., people from around the world unify in order to aid the grief stricken areas. (*) appoint (*) keep (*) take on (*) occur
This is a companion discussion topic for the original entry at https://english.best/questions/22098,when-natural-disasters-___-people-from-around-the-world-unify-in-order-to-aid-the-grief-stricken-areas/