It is important that enough time _____A_ to study.A. be givenB. w_英语解答

It is important that enough time _____A_ to study.
A. be givenB. will give C. was givenD. can be given
请高手讲下,这道题为什么要选A,麻烦把4个选项都详细的讲下,谢谢!我将感激不尽!

人气：452 ℃　时间：2019-09-07 04:09:38

解答

这是虚拟语气特殊形式之一:
It is＋good(应该的),wrong(不当的),important(重要的),necessary(必须的)＋that＋主语＋should＋原形动词,should可以省略.