1. Поставьте частичку to перед инфинитивом в скобках, где необходимо и

1. Поставьте частичку to перед инфинитивом в скобках, где нужно и переведите предложения на российский язык:
1. They were supposed (know) German well.
2. I didnt expect her (marry) him.
3. She was seen (cross) the street and (turn) round the corner.
4. That is too heavy for one person (carry); let me (help) you.
5. He tried (make) me (believe) that he was my stepbrother.