Плиз срочно на 28 надо помогите с 10 по 18 ( только ответы )

10. saw, had left. 11. hadn't seen, met. 12. had left. had. 13. felt wanted. 14.   thought, he had already gone. 15. found, was  talking, had stood. 16. spoke, had never heard. 17. told, had learnt. 18. entered, took, went out