never knew

[joham]

I never knew you had a twin sister.
I never knew Egypt was so large.

In the two sentences above, could we use 'have' and 'is' instead?

Could I ask native English teachers to help me please? Thank you very much.

 

[upasana87]

I am a student. But I just want to give this a try.


I did not know that you are having a twin sister.

I never knew that Egypt is so large.

 

[puzzle]

In this case, both "is" and "was" are fine. Right?