it is necessary that the plan__before juneA were fulfilledB was fulfilledC be fulfilledD would be fulfilled
问题描述：
it is necessary that the plan__before june
A were fulfilled
B was fulfilled
C be fulfilled
D would be fulfilled
答
答案选C，首先it is +necessary that 后面的从句要用should +动词原形的，但should 是可以省略的，这里是一个虚拟句。
答
由前面is看出还没完成任务呢,所以排除ABD.答案选C