certain of/about

English grammar help. Grammar questions from ESL learners

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SARDORBEK
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certain of/about

Postby SARDORBEK » 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..

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Alan
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Re: certain of/about

Postby Alan » Mon Jun 04, 2012 6:19 am

Your example is strange with either!


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