You have to believe in yourself. Self-confidence is _____ to success.

The government is trying hard to give the people easy _____ to hospitals.

Jay Chou is famous _____ his R&B songs.

_______ impressed me was the well-known young author, Guo Jingming’s amazing try of directing a movie Tiny Times, which was based on one of his bestseller novels.

If ________ for an explanation for an advanced camera, I would certainly find it difficult.