41.   Some were told to keep their windows shut.

42.   The administration also ordered passenger buses to keep the windows shut to prevent militants from hurling grenades into the vehicles.

43.   They ordered windows shut at polling stations, fearing grenade attacks on voters by opposition groups.

44.   By early afternoon, the wind was beginning to pick up as Beijing residents rushed home to shut windows and brace for what has become a spring ritual.

45.   The teachers cannot make themselves heard, while the noise also means keeping the windows shut in hot weather.