It was _____ great shock to the world that two planes crashed into _____ World Trade Center in New York on September 11th, 2001.
This is his only request that the room_______ after being used.
______she is not so healthy_____she used to be?
The protesters (抗议者)_____the meeting by shouting and throwing stones at the window.
That evening he ____ ____what he had thought about the research.
Laura wanted to play a joke on her father but gave herself________by laughing.