【题目】It is required that those who will be chosen to take part in that important military training _____ the experience of serving in the army．
A．have had B．will have
C．had D．have
在线课程【答案】D
【解析】
试题分析：考查虚拟语气。句意：按要求入选加入重要军事训练的人们需要有服役经历。It is required that，包含表示命令、要求的动词require，主语从句虚拟，虚拟部分为should have，可省略助动词should，选D。