1. Victor didn’t tell anyone what he had done because his creation was a real monster. The creature was ugly: with yellow skin, watery eyes and black lips. He was horrible and disgusting.
2. Yes, I felt sorry for the monster. He was like an evil, horrible and disgusting. Nobody could like him. He had to live alone, without family. He had no memories, no childhood. Nobody loved him. It was very sad. But his heart was kind. Remember the story when he saved a girl from drowning in a river. Only after people had not accepted him he promised eternal hatred and revenge on mankind.
3. Yes, I felt sorry for Victor too. He spent much time and gave all his strength and knowledge searching for the secret of life. He changed his life. And when he finally found it and made a new creature certainly he wanted him to be a breakthrough in medicine and chemistry. But he felt only disappointment about the monster he created, he felt horror and disgust. More over Victor felt responsibility for monster’s actions and further murders.
4. The story shows the contradiction between desires and reality. It expresses the absurdity of human existence. And how we are responsible for those who have tamed. (Мы ответственны за тех, кого приручили).
ответ:1) Paul said (that) he was going to the park with his brother next day.
2) Kim said (that) she hadn't seen David
3) Amy said (that) she hadn't written the message yet
4) My friend asked me whether I lived with my parents
5) I asked him if it had been too hard to find his room
6) She asked me not to tell Sara
Объяснение: В reported speech ми змінюємо час цитати, наприклад Past Simple i Present Perfect на Past Perfect. Не забуваємо змінювати займенники та обставини часу. Дуже хороше пояснення з тестами тут: https://www.perfect-english-grammar.com/reported-speech.html