They got much _____ from those new books.
The black hero fought all his life to make black and white people _____.
Only _____ people can have a good understanding of the lecture given by the scientist.
The politician was deeply hurt when many of his former supporters voted _____ him, and he lost his place in the government.
The kind lady devoted all her life to _____ those homeless children.
A large number of people are _____, and how can the local government ignore the problem?