1.   I had, in effect, convinced her that television was a precious commodity.

2.   Sugar was considered a precious commodity.

3.   Water is a precious commodity.

4.   Zygotes are intrinsically more difficult-yet efficiency clearly has to be much higher, for zygotes are precious commodities.

5.   Time is a precious commodity.

6.   Breath, energy and time are precious commodities for Mr McTear.

7.   Hope is the most precious commodity of all.

8.   And when they realized how rare such surfaces were becoming, they viewed worn pieces of furniture as precious commodities.