In the eyes of a policeman, it's a usually very dangerous to get close to the _____criminal. He may do anything he would to escape.

So many years have passed and the terrifying accident is still ______in her mind.

--- Is the situation there any better? --- On the contrary, it is ________ now.

 Mr. Smith is very happy because the cars made in his factory have never been ______.

As a _______ rule, most flowers appear in spring.