Помогите найти ошибки в использовании ГЕРУНДИЯ АНГЛИЙСКИЙ ЯЗЫК 10 класс

1. HE WAS ALWAYS READY FOR HELPING people.2. He was very glad of having been helped in his difficulty.3. On allowing to leave the room, the children immediately ran away.4. In making this experiment they came across some very interesting phenomena.5. The results of the experiment must be checked before being published.6. David was tired of scolding all the time7. The watch requires being repaired8. The problem is not worth being discussed9. Jane Eyre remembered locking up in the red room for contradiction Mrs Reed10. Why do you avoid speaking to me?11. She tried to avoid being spoken to.12. The doctor insisted on sending the sick man to hospital13. The child insisted on being examined by a heart specialist14. Do you mind him being examined by a heart specialist?15. He showed no sign of having recognized me16. She showed no sign за surprising17. He had a strange habit of interfering in other people’s business18. I was angry at being interrupting every other momentи просто исправьте ошибки! умоляю