For some time now, world leaders______out the necessity for agreement on arms re

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问题 For some time now, world leaders______out the necessity for agreement on arms reduction.

选项 A、had been pointing
B、have been pointing
C、were pointing
D、pointed

答案 B

解析根据时间状语“for some time now”，句子要用现在完成进行时态。因此，答案为B。

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