certain of/about
Posted: Tue May 29, 2012 11:03 am
They felt quite certain …. their failure.
a) of
b) about
I think, the two answers are possible here.
My questions:
1) Are the two prepositions always interchangeable?
2) Which one is more often used?
Thank you..
a) of
b) about
I think, the two answers are possible here.
My questions:
1) Are the two prepositions always interchangeable?
2) Which one is more often used?
Thank you..