31.   Their affair lasted for six years.

32.   Then he became dopey and fell into a deep sleep that lasted for several hours.

33.   Then the familiar clamour of bickering voices that will last for months began.

34.   There followed an excruciating silence that lasted for at least a minute.

35.   Tiles are less durable than slates, but good quality clay plain tiles can easily last for sixty years.

36.   To last for very long any social system needs to be buttressed by a powerful integrating ideology.

37.   We are not like sage grouse whose Marriages last for minutes.

38.   We met for the first time at a business conference, and we immediately struck up a friendship which has lasted for years.

39.   We used Forest palisade poles, which are pressure-treated with preservative and guaranteed to last for at least fifteen years.

40.   With proper care, the washing machine should last for years.