11.  Assuming you have the right environment, the most reliable way to fill it with bluebells is by planting lots of seeds.

12.  A blood test is the most reliable way to diagnose the disease.

13.  A history of crashes or moving violations is one of the best warning signs, but officials say they no reliable way of knowing about such events.

14.  About three-quarters of them would survive anyway without the drugs, but there has been no reliable way to tell which women that would be.

15.  According to Ms. Hall, there is currently no other reliable way for a surgeon to calibrate the lasers.

16.  Ad spending is carefully monitored because it is considered a reliable way to assess the condition of the overall economy, particularly the propensity of consumers to spend.

17.  But even now the correlation method is the most reliable way of dating fossils under certain circumstances.

18.  But no one has yet found a reliable way to fill the pipeline.

19.  Cellular in Africa, for those who can afford it, is not just a gimmick, but often the only reliable way of communicating.

20.  Columbus sailed without celestial navigation, without longitude, without any reliable way to measure speed.