I forgot to include the following sentences.Thank you very much.

1)Another gothic feature is the presence of mystery about the parts of the monster's body (better: as for the creation of the monster/reagarding the creation of the monster).
2)We only know the doctor used parts of dead bodies (corpses/or limbs
3)Victor dies in the freezing and desolate location (not place) of the Arctic.
4) Dr. Frankenstein had spent all his life for his experiment (trying to infuse life into a lifeless being) but the finished creature is horrible. He feels disgusted by the creature.

1) Another gothic feature is the presence of mystery regarding the creation of the monster.

2) We only know the doctor used parts of dead bodies.

3) Victor dies in the freezing, desolate Arctic.

4) Dr. Frankenstein had spent all his life trying to infuse life into a lifeless being, but the finished creature is horrible. Dr. Frankenstein feels disgusted by the creature.

Again, read and compare carefully.