单项选择题
Kelley" s publicists abruptly______a planned seven-city publicity tour, announcing that their "publishing objectives have been accomplished."
单项选择题 New research methods are being brought to______the subject.
单项选择题 HIV and AIDS may threaten the fundamental values of society, and any attempt to deal with them presents a______challenge.
单项选择题 Human beings are______creatures, designed to be on the move.
