1. She was too small to remember the incident. correct
2. He is the person to speak to on this question. not correct
3. It is important for him to receive the information today. correct
4. Here is the money to spend on the furniture. correct
5. They are very pleased to be invited to the conference. correct
6. You will be the first to speak. not correct
7. This mistake must be paid particular attention to. not correct
8. You'd better to stay at home. correct
9. It's great of him to do his best to save them. correct
10. He did not know what to do next and who to make the request to. correct
11. He was the last to guess her intentions. correct
12. І prefer to have a holiday somewhere by the sea rather than stay in the country. not correct