1.   Exams are always done under strict time constraints.

2.   He might advise me to make a statement to the police which I should of course do under his guidance.

3.   I had the operation done under general anaesthetic.

4.   Not only must they care for distressed and disturbed young people, but they must do so under a cloud.

5.   Nutrient renewal also occurs more rapidly under a managed fallow system than it does under unmanaged fallow for a number of reasons.

6.   You were right to do what you did, under the circumstances.

7.   The test was done under controlled conditions.

8.   A medical study that was questioned by many because it was done under the aegis of a major pharmaceutical company.