11.   City council officials say the delay has been caused by problems getting office space ready.

12.   An electrical or computer problem would cause those screens to go blank, or could even result in erroneous flight data to be displayed, Gellert said.

13.   Another problem was also causing concern to Roth.

14.   Attention deficit disorder and hyperactivity are believed to be inherited and are caused by problems in processing dopamine, a chemical in the brain that helps transmit nerve impulses.

15.   Boeing maintains there is no evidence that rudder problems caused the crash.

16.   A large crack appeared in the west wall when foundation problems caused half the chapel to sink.

17.   A lack of orders for the plate steel it specializes in have compounded problems caused by a failure to update its technology.

18.   Bus and traffic problems caused the American baseball team to arrive only eight minutes before the scheduled start of its opening game against Nicaragua.

19.   But the celebration for other technology stocks continued, even as technical problems caused a delay in trading on Nasdaq.

20.   But the only way to keep Boeing in the suit is to maintain that mechanical problems caused the crash.