Use ‘I had known’ in place of ‘I was knowing’ because with “Would have+ v3” we need to use “if + sub + had + v3” thus ‘If I had known’ is correct.
Who lives in fourth floor and the age of that person is?
What is the difference between the floor number of O and N?
Who likes Black?
Which of following is/are correct?
How many persons goes before U?
How many boxes are kept above the one that contains Papaya?
On which floor does the person live who likes Nokia?
F’s height and I’s age is?
Who among the following lives on ground floor?
What is the colour of the Shirt?