题目内容：

They insisted that immediate action _ to put the thing right.
A.was taken B.be taken C.take D.took

优质解答

B
英语中表示“建议”“命令”“要求”类动词,从句的谓语动词为[should +动词原形]should 可省略,故选B.=They insisted that immediate action should be taken to put thing right.