The question was so ________ that there was a ________ expression on the teacher's face.

It has been proved by the fact that watching violence on TV may cause children’s _____ behavior.

The policeman’s _________ traffic directions made all the drivers quite ___________. 

 Would you please make up a topic ______ discussing at tomorrow’s conference?

Alice kept perfectly still, ______ that the dog might attack her. “It was the most ______ experience of my life,” she told me later.