短文改错(共10小题;每小题1.5分,满分15分)
In 1972, the United Nations hold a meeting in Sweden ___
to share ideas about ways to take better care of for the ___
earth.At the summit, people from more than one hundreds _____
countries discussed some of the important problems faced _____
our planet.Since then, several Earth Summits had been held. ____
In 2002, the Earth Summit was held in Johannesburg. ___
One of the main theme was “sustainable development”, or __
the question what we can continue developing the world _____
without damage the environment.Most of the speakers ___
talked the three biggest killers in the world. ______