Brave New World describes a promising future there is no war or violence and all the people can live happily.
A. where
B. which
C. that
D. whom
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(答案→)A. where
B. which
C. that
D. whom
解析：考查定语从句。本题的先行词是a promising future，后面的定语从句的句子结构很完整，故使用关系副词where。BCD三项都是关系代词在句中要做主语，宾语，定语等。