The meeting tomorrow afternoon is about rid of pollution.A. held to get 　B. to be held;

问题补充：

The meeting tomorrow afternoon is about rid of pollution.

A. held, to get

B. to be held; getting

C. to hold; to get

D. being held; getting

答案：

A. held, to get

(答案→)B. to be held; getting

C. to hold; to get

D. being held; getting

解析：不定式作定语表示将来和目的；介词后面跟动名词作宾语。