The following text is for questions 17 to 19.

Violence on TV 

    Nowadays, many programmes on TV contain violence, such as shooting, killing, and fighting that can influence many people, especially children, so it is important for us to choose TV programs wisely.

    Children usually want to imitate things that they see and they generally do not know the difference between good and bad things. For example, a little boy suddenly says violent things after he has watched TV. He doesn't know whether this word is good or not.

    There are a few ways to avoid watching violence on TV. You need to spend more time doing other things. You can communicate with your family, go out with your friends, take exercise, enjoy your hobbies, think about or imagine something, and so on. For parents who have children, they should restrict and control their children's viewing of violent TV shows. Parents must control the TV programmes that their children watch.

    From the explanation above, it can be concluded that TV is one aspect of our enjoyment of life. But we must choose programmes carefully.

" ... they should restrict and control their children's viewing ...." (Paragraph 3)

What is the synonym of the underlined word?