题目内容：

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                                     1.___            

to share ideas about ways to take better care of for the                                   2.___

earth．At the summit, people from more than one hundreds                                 3._____

countries discussed some of the important problems faced                              4._____

our planet．Since then, several Earth Summits had been held.                       5.____

In 2002, the Earth Summit was held in Johannesburg.                                   6.___

One of the main theme was “sustainable development”, or                        7.__

the question what we can continue developing the world                                8._____

without damage the environment．Most of the speakers                                9.___

talked the three biggest killers in the world.                                                 10.______