31.   The problems of traffic congestion will not disappear in a hurry.

32.   Whatever the truth may be, planes and ships regularly disappear in the triangle.

33.   But my bad mood soon disappeared in the relaxed, carefree and friendly atmosphere that greeted me.

34.   Rog did not, however, disappear in a white sheet of flame.

35.   So the classic typological races disappear in the scientific reality of time, environment and geography.

36.   The fire dropped all round it so that it disappeared in the rolling orange and curling black.

37.   He stopped to watch her until she disappeared in the darkness.

38.   Interestingly, this is the period in which parietal cells disappear from the same anatomical site in most subjects.

39.   Moments which we would like to savour disappear in a flash and moments which embarrass us seem interminable.

40.   Medical sources in Moscow said while it could be fatal in extreme cases, most symptoms should disappear in six months.