How old are the schoolboys in public schools like Eton

A．Have members of the audience try each piano themselves.
B．Urge members of the audience to by upright pianos.
C．Play each piano so the audience can listen to the difference.
D．Open each piano and let the audience see how they are strung.

A．Western planes bombed civilian targets.
B．Western planes were driven off by Iraqi soldiers.
C．One Western plane was shot down.
D．Iraqi military installations are safe and under protection.