This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
I think the error is letter a and should be replaced with, was very exciting, since because of the clause, "we have done". Done is the past participle of do, right? So have done is in the past + past participle form of the verb so I think 'is very exciting' should be 'was very exciting'.


I'm seriously not sure but hope it helps