It is high time that this controversy____put an end to. A was B is C were D be请给详细解释！谢谢！

It is high time that this controversy____put an end to. A was B is C were D be请给详细解释！谢谢！
It is high time that this controversy____put an end to. A was B is C were D be
请给详细解释！谢谢！

It is high time that this controversy____put an end to. A was B is C were D be请给详细解释！谢谢！
选A.这是需用虚拟语气的固定句式:It is high /about time that+主语动词过去式或should+动词原形(注:这个特殊should不可省略)故选A

be 吧 与前面的it is high time 有关

D.be
翻译为：现在正是这个争议要结束的时候了。
should被省略，should情态动词后用原型be。

It is high time that this controversy____put an end to. A was B is C were D be
答案选择 D 参见虚拟语气的用法 (should)be
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be