问题描述：
It is important that enough time _____A_ to study.
A. be given B. will give C. was given D. 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!
A. be given B. will give C. was given D. 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!
问题解答：
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