Язык.
подчеркните одной чертой сложное подлежащее (именительный падеж с инфинитивом) и прерывистой - сложное дополнение (объективный падеж с инфинитивом).
1. we believe the prevention of a crime to be one of the main functions of police.
2. an accused wanted his rights to be explained to him by a lawyer.
3. our laws are known to protect the interests of all people.