Everyone should do something ______ wild animals.

According to a report, cigarette smoking _____ in all indoor public places in some provinces soon.

People should think about _____ they can have a positive influence on the planet.

It is not our mistakes that define who we are; it is how wefrom those mistakes that counts

Did you ______ the concert yesterday evening—- Sorry, I didn’t have enough time. I really regret ______ my homework earlier.