With economy developing at great speed, our city has _____ quite a few changes in recent years.

When the questions got personal during the talk show, the actress ________ in tears as she opened up about the wounds she suffered.

Eric felt the bag brought back by his parents, curious to know what it              .

(2014·安徽省芜湖三校一模)A recent study has  ________an unexpected conclusion that the African elephant should be divided into two different species.

Bad habits are no way easy to be ______; it needs your determination and perseverance.