1.   All polite exchanges are conventional to a greater or lesser extent.

2.   And unscripted exchanges are not his best format.

3.   Effective exchange of information is essential, and we devote considerable efforts to that.

4.   For this reason the exchange of information is not as comprehensive as it might be.

5.   Our exchanges have been by telephone or Royal Mail, so I readily acknowledge that there May be some problems there.

6.   The exchange is purely ritual in function, authorizing Bert Braddock to reassure anxious shop stewards if they start asking awkward questions.

7.   There were bitter exchanges between them outside the court room.

8.   These exchanges are a ground-breaking insight for neo-conservative realism.