Английский язык! Комплекс Object. Выполнить задание! знатоки, англ.языка, помогите))

1. Mother called me. I heard it. - I heard Mother call me.
2. Somebody touched me on the hand. - I felt somebody touch me on the hand.
3. My friends left the room. The teacher saw it. - The teacher saw my friends leave the room.
4. Their class is good at Math. They think so. - We think their class to be good at Math.
5. Our parents are kind. We know it. - We know our parents to be kind.
6. His son is bad at English. Everybody believes it. - Everybody believes their son to be bad at English.
7. The weather is rainy. I expect it. - I expect the weather to be rainy.
8. Our daughter is pretty. Her friends think so. - Her friends think our daughter to be pretty.
9. he wants another cup of tea. I think so. - I think him to want another cup of tea. (Дурацкое предложение, и дурацкий у вас препод английского!!!; -)

помогите мне, пожалуйста....
III. Перепишите предложения, подчеркните и назовите инфинитивную конструкцию, переведите предложения на русский язык:
1.It is for the state to protect the people and society from crime.
2.The laboratory examination of certain physical evidence is considered, in some types of offences, to be the most important part of the investigation.
3.The police officer wanted the young man to be invited here.
4.This case is unlikely to be investigated quickly.
5.This young man is unlikely to have committed a crime.

IV.Употребите глаголы в необходимой форме, переведите предложения на русский.

1. If I (be) stronger, I'd help you carry the piano.
2. If we'd seen you, we (stop)..
3. If we (meet) him tomorrow, we'll say hello.
4. He would have repaired the car himself if he (have) the tools.
5. If I didn't have you, I (not to know) what to do.