Last summer the Barker children had wonderful holidays in Russia, hadn't they?
They didn't travel to Russia by plane, did they?
The Smirnovs met John and Sally at the airport, didn't they?
The Barker children didn't stay at a hotel in St Petersburg, did they?
In Moscow John and Salli listened to an opera in the Bolshoi Theatre, didn't they?
In St Petersburg they had a boat trip, hadn't they?
The Anichkov Bridge wasn't their favourite, was it?
John and Sally sent the Smirnovs an e-mail, didn't they?