21.   By then we were out of food, but everybody was just really cool.

22.   If I have any qualification, it is that contemporary work is conspicuous by its absence.

23.   In some areas public order and drunkenness offences are down by more than a third.

24.   It was late evening when the doctor arrived, and by then it was too late.

25.   Just wait until July -- all the exams will be over by then.

26.   Only by painstaking research are we able to paint an accurate picture of what is really happening.

27.   Perhaps they felt pity and affection for the animals moving through a world by which they were doomed to be destroyed.