Jiangsu Province a series of activities to protect water resources over the past few mont

Jiangsu Province a series of activities to protect water resources over the past few months. Early this year, several cities citizens to use new types of toilet equipment.
A. organised; called for
B. has organised; called for
C. organised; has called for
D. has organised; has called for

A. organised; called for(答案→)B. has organised; called forC. organised; has called for D. has organised; has called for解析：考查时态，第一空填现在完成时和over the past few months连用，第二空填过去时，和early this year连用，句意：江苏省在过去的几个月中组织了一系列保护水资源的活动，今年初，几个城市号召市民使用新型的厕所设备。选B。

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