Susan was reading a newspaper on the train_________ a strange old man come over.
If you are in the zoo, remember not to touch or go near the animals. Although some of the animals are cute, you _________ leave them alone.
Chen Guangbiao says he _________ all his money to charities when he dies.
Stay away from junk food, please. It’s bad for us,_________ for children!
If prices rise too high, the government has to do something _________ it.
Don’t forget to wash your hands _________ you have meals.