Done your revision?
Uh, oh yes. I concentrated on trigonomentry.
I-I-I-I've done calculus, mainly.
Oh! I believe they concentrated on calculus last year!
Oh! Oh dear!
[Mr. Bean snickers]
Quiet, ladies and gentlemen. The exam will commence in two minutes
[The student beside him places a pen on the table] (please edit this line)
Ladies and gentlemen, you may open the envelopes containing your papers. The exam starts... now.