81.  A further problem arises from the fact that the experimental results of critical importance are far from clear-cut.

82.  A gang of youths are roaming the city, vandalising stores, starting fires, and terrorizing people.

83.  A gas exerts pressure because its molecules are moving about rapidly and in random directions.

84.  A good sense of balance is always useful when you are sailing.

85.  A good starting point is the statutory framework within which they are working.

86.  A good varied diet and suitable water conditions are essential to make the best of this beautiful fish.

87.  A great majority of them are looking for the theatre of books, and it is not there.