Olympic anouncers.
Perhaps learn which the most commonly spoken languages or, indeed, the most commonly spoken European languages are. Hint: French is slightly less popular than Mandarin, Spanish, Hindi and a few more.
Or, just claim "tradition" whilst promoting Panophonics, MocDogals, Moca-Lola and any other brand Great Britain [TM] has been sold to.

[TM]Great Britain, London, 2012, Games, Sport, Olympic, England and "take the stage" are trademarks of Coco-Mac-Pana-cunts from 2011 until 2022 by order of the corrupt twats in charge of the UK.
(Me, I'm not... in any way intoxicated, Fri 27 Jul 2012, 22:41, 4 replies, latest was 12 years ago)

Au contraire
French is still the de facto language of international diplomacy, and English is the most widely-spoken language of commerce. It is therefore much more likely that one country would be best able to communicate with another country through either of these languages.

Consider the example of Hungarian and Japanese. Very few people would be expected to be able to speak both of these languages do it is highly likely that communication between these people would be in French or in English.

So it really is a case of "Alternative Vote"; which combination of languages will exclude te least number of people when second- and third- languages are included.

And any broadcaster will be providing their own translations (and probably will have pre-released copies of speeches, etc).
( Ghoti Fingers, Sat 28 Jul 2012, 0:57, Reply)

French is the official language of the olympics

(Smale is stuffed, Sat 28 Jul 2012, 1:15, Reply)

Which makes them so much less international.
"Official" is a pretty poor excuse considering.
(Me, I'm not... in any way intoxicated, Sat 28 Jul 2012, 1:27, Reply)

Having every announcement in every conceivable language
might slow things, somewhat.
( monster munch person, man, woman... camera... TV?, Sat 28 Jul 2012, 7:38, Reply)