课时跟踪检测(十五) canada — “the true north” ⅰ.单项填空 1.(2013•济南高三模拟)—let's go to a movie after work, ok? —________ a.not at all. b.never mind. c.why not? d.you're welcome 2.coronado's unique history began when a spanish explorer caught ________ sight of a group of islands seventeen miles off ________ coast of southern califo