Choose the correct preposition.
was
1 Jamie moved to/in London when he was
younger.
2 He wrote his first book on/at the age of 20
3 According to legend, a huge monster lives
in/at the lake.
4 Suddenly, Mr Bumble appeared at/on the
door.
5 Kate watched fireworks in/on New Year's
Eve in Edinburgh. Помогите очень срочно ​