单项选择题
A.up B.out C.down D.off
A.ever know B.ever knew C.have ever known D.are knowing
A.all B.of C.both D.one of
A.better B.the best C.good D.best
A.always B.often C.ever D.usually
A.concerts B.a concert C.the concert D.concert
A.which leading B.leads C.which led D.leading
A.expanding B.expands C.expanded D.expand
A.drives B.drove C.driving D.driven
A.happens B.which is happening C.which happening D.which happened
A.lived B.lives C.living D.live