Ответ:

1. How long had he studied Law before he entered Law Academy?

2. What 5 calls had he received, by the time the train reached the city?

3. Why did the young officer want to act the main part in the investigation?

4. What had already finished, when we came into the courtroom?

5. What had the lawmaker proven, by the time the President decided to take necessary measures?

6. What kind of new law did limit the powers of government?

7. What had committed the criminal before police detained him?