6) They didn't pay the bill until the electricity was cut off.
It was not until theelectricity was cut off that they paid the bill.
7) I couldn't comment further until I had all the information.
It was not until I had all the information that I could comment further.
8) No one could leave the stadium until 12.30.
It was not until 12.30 that someone left the stadium.
9) The work on the new bridge wasn't completed until the end of 2004.
It was not until the end of 2004 that the work on the new bridge was completed.