用所给词的适当形式填空。X|k  |B | 1 . c |O |m
Doctor Wang always spends a lot of time ________(解释)things to us.
I am           (terrible) sorry that I’m late again.
It’s_______(correct) to walk across the road when the lights are red.
I will never forget the  ________(经历).during the last summer camp.They were so wonderful.
He is sure there is no  ________(hide) meaning in this article.
The little boy stood  ________(紧靠) the wall.
This kind of novels were popular at the end of the  ________(ninety) century.
It’s unhealthy for us to stay in the  ________(pollute) air like this.
The air is much________(新鲜 )after the government has taken actions.
We heard a whisper from the  ________(dark).We felt very afraid.