помогите с английским

I.I. Open the brackets paying your attention to the Infinitive forms.
1. I am sorry (to break) your pen.
2. He seems (to know) French very well: he is said (to spend) his youth in Paris.
3. They wanted (to cross) the river.
4. Let me (to help) you with your homework.
5. What makes you (to think) you are right?
6. This is the book (to read) during the summer holidays.
7. He seems (to write) the letter now.
8. I saw (he, to cross) the street.
9. I want (he, to come).
10. I have never seen (she, to dance).