11.   The bigwigs attempt to persuade him, using a variety of arguments, that he is making the mistake of his life.

12.   The research uses a variety of social survey methods.

13.   The ten mile route uses a variety of public footpaths, bridleways and pavements through Horton, Colnbrook and Iver.

14.   Trains are operated on almost an hourly basis throughout the day, using a variety of locomotives from their varied collection.

15.   Using a variety of communicative skills to transmit knowledge, understanding and feelings.

16.   We recommend using a variety of assessment methods.

17.   You can of course treat different sections in different ways, using a variety of techniques.

18.   Most teachers use a variety of approaches and methods in their work, suiting them to the needs of each class.

19.   To amplify its advertising effort, the company used a variety of sales-promotion techniques.