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I should say ‘by,’ not ‘of,’ in the given sentence, shouldn’t I?


After the speech by Mr. Roberts, Mrs. Smith expressed her gratitude to the audience.

Comments  

Who wrote and delivered the speech?

teechrWho wrote and delivered the speech?

Mr. Roberts, teechr.

Students: Are you brave enough to let our tutors analyse your pronunciation?

The original is fine as it is; use "by", not "of".

Thank you very much, teechr.