1. My uncle said he had just come back from the Caucasus.
2. He said he had a good camera.
3. Oleg said his room was on the second floor.
4. Misha said he had seen them at his parents' house last year.
5. Ann said she had just met Kate in the street.
2. Translate
To sit up late - засиживаться допоздна,
To bother - беспокоить(cя),
To retire - уходить на пенсию (или в отставку),
Confidence - уверенность,
Ache - боль,
Injury - травма,
Drinkable - пригодный для питья,
Environment - окружающая среда.