The aging population in China will greatly _______ the whole society.
The president spoke at the business meeting for nearly an hour without ______ his notes.
Her work changed the way _______ people think about chimps.
The Voice of America began during the World War Ⅱ, when Germany was broadcasting a radio program to get international ______.
The officers narrowly escaped ___________in the hot battle.
The children do not know how to _______ themselves decently at the party.