The organization serves _________ more than 3,000 children who would not have  ______to music education.  

Finding a job is very difficult, so the forst_____ is very important in a job interview.

--- Can you shoot that bird at the top of the tree?--- No, it's out of ____.

If you build a house with good_______ , it will last long.

Before the final examination,many students have shown      of tension.Some have trouble in sleeping while others have lost their appetite(胃口).