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..
certain of/about
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certain of/about
by SARDORBEK » Tue May 29, 2012 11:03 am
- SARDORBEK
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