In a(n) _____ to help preserve history, the Greek government established a committee to undertake the professional restoration of the Acropolis.

Only when you get a special permit can you have the ___ of interviewing the prime minister of China.     

The U. S．declares it has the best medical technology in the world，but quite a lot of Americans have no ____to health care service．

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

. School children must be taught how to deal with dangerous ________.