21.   There were glasses of champagne and cigars, but not many of either were consumed.

22.   Two glasses of wine are enough to make me stupid.

23.   The glass of water is half full.

24.   For them, the glass is half full, not half empty.

25.   The glass is of good quality.

26.   Their empty glasses were still on the coffee-table, reminding her of the night before.

27.   In general, we are reminded that glass was hardly an everyday product in antiquity.

28.   The thieves left empty-handed from Gateway in Bishops Cleeve because reinforced glass had been installed in the tobbacco kiosk.

29.   In particularly sunny locations, tinted glass may be desirable as it cuts down both glare and heat.

30.   There is hi-tech glass and lighting, cute little passport kiosks and a tapered rubber ramp to baggage reclaim.