Directions: Select the phrase from the options below that should replace the underlined phrase in the sentence to make it grammatically correct. If the sentence is already correct, select 'No correction required' as your answer.
I would have bought you a present if I have been knowing it was your birthday.
1
If I have known
2
If I have been known
3
If I had known
4
If I had knowning
5
No correction required