请问这个选什么?It is necessary that the problem____in some way or other.A is settled B was settled C be settled D has been settled 很纠结ACD到底选哪个?

It is necessary that the problem___C be settled _in some way or other. A is settled B was settled C be settled D has been settled 该句子结构要求用should+ v-原形的虚拟语气，should可以省略，正确答案是C， 其他都不对。 类似的词还有： natural, required, requested等等。

答案选 C be settled
【解析】it's necessary that 主语 + should(可省略)+ 动词原形

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正确答案是：C
【解析】：It is necessary that sb (should ) do sth,这个句子采用虚拟语气,should 可省.
同样的类似的词语还有 important/essential/proper/urgent/advisable/strange/natural等等.
问题是被解决,省略了should,就是be settled,故正确答案是C.
【翻译】：这个问题必须用某种方法解决.

答案选 C 。It is necessary that 后接动词原形。