WHO is short _____ the World Health Organization

Zhang Guorong’s singing career _________ about over 20 years. It was his _______appearance at singing in public.

With the world ______ fast, we have something new to face every day.

The Great Wall is one of man-made wonders in the world.

She spent all her spare time learning thecourses, or she________ the first place in her school in the 2010 CollegeEntrance Examination.