Поставьте частицу ‘to’ перед глаголом в скобках, где необходимо: 1. They were supposed (know) German well. 2. I didn’t 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.

1.They were supposed to know German well.
2. I didn’t expect her marry him.
3. She was seen to cross the street and to turn round the corner.
4. That is too heavy for one person to carry; let me to help you.
5. He tried make  me to believe that he was my stepbrother.