Question
Among the given sentences, identify the sentence(s) that
are grammatically and contextually correct. (I) If the government had implemented the policy earlier, the crisis could be averted.(II) The train, which was delayed by heavy rain, finally arrived at midnight.(III) Each of the applicants have submitted their documents online.Solution
I- IncorrectThis is a third conditional sentence (talking about a past unreal condition). 
The phrase "could be averted" is incorrect because it uses the present conditional instead of the perfect conditional.
The correct form should be: If the government had implemented the policy earlier, the crisis could have been averted. 
III-Incorrect"Each" is a singular subject, so it should be followed by has, not “have.”
II- CorrectThe sentence is grammatically correct and contextually meaningful.
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