Дополните предложения словами for или since. Complete the sentences. Use for or since.

I've lived in Washington _____ 1997.
Ben has studied English _____ three years.
They haven't visited their grandparents _____ months.
Julie's ill. She's been in bed _____ Tuesday.
My dad has had his car_____ sixteen.
It's been ten years_____ we moved to Oxford.