Here are the sentences rewritten in reported speech using the words provided:

1. She suggested that they stop for a coffee break.
2. He apologized for forgetting about their appointment.
3. He insisted that they couldn't go yet and wanted to see every picture in the gallery before leaving.
4. He complimented her, saying that it was very kind of her to send him a lovely present.
5. She admitted that she ate the last chocolate biscuit.
6. He denied being to blame and said that he never used the office phone for personal calls.
7. He warned them to be careful and not to touch those very hot plates.
8. She complimented Robert, saying that he recited the poem very well.
9. The old woman accused the boy of taking her bag.
10. They criticized the children, saying that they were lazy.