31.   College classes and offices are the first occasion for much cross-gender social contact.

32.   His shot hit the right upright on the first occasion and the crossbar on the second.

33.   It was the first occasion that Suharto has been directly quizzed about the extent of his wealth.

34.   The case represents the first occasion on which a Rwandan suspected of war crimes has gone before a national court.

35.   The first occasion was on election day two weeks ago.

36.   But he chipped over the bar on the first occasion and Zambia keeper James Phiri saved the second.

37.   This is not the first occasion in his career that Johnson has been in trouble for foul play.

38.   This is the first occasion that the queen has opened the gardens of Buckingham Palace in the centre of the capital for a classical concert.

39.   Novotna surrendered her serve twice, on the first occasion with three double faults.

40.   The advisory note, made public Saturday, marks the first occasion on which the Vatican has urged priests to show such understanding on the issue of contraception.