Put the books back ________ they belong after you have finished them.

Don’t trust such an advertisement on TV. That kind of electronic dictionary is ______ it says.

It is difficult for us to learn a lesson in life ______ we’ve actually had that lesson

Do you like watching The Voice of China on TV—Sure. It’s nice. But I ______ Sports News.

s an act or a course of action that people____ you to take by social customs, law or religion.