Подскажите пожалуйста. Очень срочно!

Перепишите предложения, подчеркните неличную форму глагола и
определите ее (инфинитив, герундий, причастие или одна из сложных
конструкций) . Предложения переведите:
1. A permanent contact having been made with ethnic minorities, the police
were able to prevent crime.2. To protect the interest of the public and to punish and deter the criminal is
the court’s duty.
3. This trial needs participating experts in different branches of industry.
4. The court allowed him to remain at home.
4) Перепишите предложения, определите тип при