11.   The board has been seeking for years to replace its old machines with new models, but that effort has stalled.

12.   The San Francisco Animal Welfare and Control Commission adopted similar legislation last year, but the effort stalled at the county supervisor level.

13.   They predict that the effort will stall for lack of support.

14.   Yet the previous efforts stalled.

15.   And as diplomatic efforts have stalled, the warring sides have taken their differences back to the battlefield.

16.   But the effort stalled, in large part because other nations were waiting for the most powerful U.N. member to weigh in.

17.   Federal lawmakers have talked about the need to pass laws to encourage registering U.S. ships in America, but efforts have stalled over the past few years.

18.   Pressure has mounted on the government in recent days to reverse the impression that its economic reform efforts have stalled.

19.   The government appeared paralyzed, its reform efforts stalled.

20.   The United Nations has undertaken to organise a referendum on self-determination in the territory, but its efforts have stalled in the face of obstacles from both sides.