单选题For some time now, world leaders _____ out the necessity for agreement on arms reduction.Ahad been pointingBhave been pointingCwere pointingDpointed

单选题
For some time now, world leaders _____ out the necessity for agreement on arms reduction.
A

had been pointing

B

have been pointing

C

were pointing

D

pointed


参考解析

解析:
句意:一段时问以来,世界各国首脑都一直指出有必要就裁军问题达成共识。从该句中的时间状语for sometime now可以看出,主句的动作从过去某一时间开始一直持续到现在,而且动作可能还会延续,故时态应为现在完成进行时,因此B选项符合要求。

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