21.   After the Hamas suicide bombings the borders were closed.

22.   All the borders are closed.

23.   Afterward, the border apparently was closed again.

24.   All three are threatening to close their borders.

25.   All of the countries officially have closed their borders to the refugees.

26.   But a diplomatic snarl has been keeping the Texas border closed to U.S. bus lines.

27.   But after cases turned up in France, Italian protesters closed the border to French beef last year.

28.   But because Pakistan has closed its border, most of them are stuck in miserably hot tent camps on the outskirts of the provincial capital of Jalalabad.

29.   But because Israel closes the border when there are clashes, the workers often lose several days of work each month.

30.   But the border was closed, and Pakistani police officers stared impassively from sandbagged gun emplacements.