Поставьте глагол в скобках в правильную видо-временную форму и переведите предложения:
If the police officer (to find) a burglar in his home, he (to arrest) him.
If we (to study) Criminalistics better, we (not to regret) about it now.
If I (to be) an investigator, I (to solve) crimes.
If the detective (to identify), they (to locate) a week ago.
The divisional inspector (to prevent) the offence, if he (to come) earlier.