1.   Gang activity has driven business away from downtown.

2.   Most classroom activities have a specific learning objective.

3.   Of course, all this illegal activity has its penalties.

4.   The activities of competitors have an important bearing on pricing Decisions.

5.   Those economies which have successfully switched underemployed agricultural labour into manufacturing and service activities have generally achieved significant real economic growth rates.

6.   A succession of scientific studies of animals implies that physical activity has a positive effect on mental functioning.

7.   But his financial activities have the air of an assiduous fund-raiser rather than the representatives of a really wealthy institution.

8.   Does the activity have a certain measure of substance, as measured by quarterly or annual value of turnover?