According to a UN report，one third of the world population have no    to clean drinking water and health care.

He moved to a big city to try his __________.

. The rocks are very big with _____ of colors on them.

After our government launched a (n)       to popularize Chinese language worldwide, lots of Confucius colleges have appeared in foreign universities.

With the _______ of the new album “Second Round”, May Day is now touring in major cities on the Chinese mainland, including Beijing, Shanghai and Chengdu.