Sarah Polley, 19, wrapped two films — “Go!” and “Guinevere” — in Los Angeles this year, but that doesn’t mean she has any intention of leaving her Toronto home for good.” ‘Guinevere’ was a script that made me want to go to L.A.,” Polley says of the older man/younger woman comedy. “That was a big deal. It was good enough that I felt like spending a couple of days in L.A.” Back in the early 1990s, the Disney Channel sent the adolescent thesp to L.A. to do “press stuff” for its series “Avonlea,” and Polley didn’t much like it. Actually, “horrible” is her word to describe the place. But then along came Audrey Wells’ script “Guinevere,” and since Polley was in town anyway, she also met with helmer Doug Liman about “Go!,” in which she plays a clerk-turned-drug dealer. Polley, who often draws comparisons to the young Uma Thurman, says it was her understated performance in “The Sweet Hereafter” that attracted the attentions of U.S. filmmak-ers. Regarding her experience of working with Liman and Welles, Polley says it turned out to be a most positive experience: “They weren’t from L.A. and they weren’t all caught up in the (industry) machine.” Despite her two wrapped American films, Polley says, “I love working in Canada, and would love to do that for the rest of my life. I don’t understand actors who go (to L.A.) to live.” Regarding future projects, the teenager now is fielding offers — as they say in L.A.