Directions: Which of the following phrases given below in the options should replace the phrase that is underlined in the sentence to make it grammatically correct? If the sentence is correct and does not require any correction mark 'No correction required' as your answer.
It is about time we tell you that you should start preparing for the exam sincerely.
1
told you that
2
had tell you that
3
will tell you that
4
have told you that
5
No correction required