Tom, clean up the broken glass _________ someone walks on it.
It is important to have your eyes examined regularly to check for any sign of eye disease that may not have any ________.
—Why do you choose to work in an international travel agency.—Well,you know,English is my ________.So it is my best choice.
My first ________ of him was that he was a kind and thoughtful young man.
As the world's population continues to grow,the ________ of food becomes more and more of a concern.
While she was in Paris,she developed a ________for fine art.