2 you paid attention to the tour guide, you would have learnt a lot about the city’s history.
3 before have we seen such a magnificent monument.
4 do the Parsons go to the theatre.
5 did Jessica hear that her favourite band were coming to town than she booked tickets.
6 using it yourself can you appreciate his invention.
7 did Jason pay for our cinema tickets, but he offered to drive us there as well.
8 had Alex got to work when his supervisor asked to see him.