Ответ:
- saw — Second conditional: “If I saw a snake, I’d be terrified.”
- would you do — “What would you do if a large dog attacked you?”
- wouldn’t buy — “I wouldn’t buy that bike if I were you.”
- have lived — Present perfect with “since”.
- for — “For a long time” describes a period.
- How long — asks about duration.
- have been — “I have been married for 15 years.”
- did — “When did Queen Victoria die?”
- was invented — passive voice, past simple.
- written — “The first book in the series was written ten years ago.”
- by — names the agent in a passive sentence.
- used to — describes a past state or habit.
- didn’t use to — after “didn’t”, use the base form.
- buy — “might” is followed by the base form.
- might not — “She might not come tonight.”
