Mixed tenses

You look really great! _________ (EXERCISE) at the fitness centre lately?

What ______ (DO) when the accident happened? - I _______ (TRY) to change a light bulb that had burned out.

I _______ (HAVE) the same car for more than ten years. I am thinking about buying a new one

If it ______ (SNOW) this weekend we can go to Lake Tahoe for a skiing holiday.

What do you call people who work in libraries? I think they ________ (CALL) librarians.

I ___ (COME) to England six months ago. I started my economics course three months ago. When I return to Australia I ______ (STUDY) for nine months and I will have been in England for exactly one year.

Samantha _______ (LIVE) in Berlin for over twenty years. In fact, she _______ (LIVE) there when the Berlin Wall came down.

If Vera keeps drinking she ____ (LOSE) her job.

The Maya established a civilized culture in the jungles of Yucatan, however their culture disappeared by the time the first Europeans ____ (ARRIVE) in the New World.

Please be quiet! John ____ (SLEEP).