She on her work so much that she didn’t notice that a crowd of people had around her.
A. focused; focused
B. fixed; gathered
C. concentrated; concentrated
D. carried; collected
网友回答
A. focused; focused
(答案→)B. fixed; gathered
C. concentrated; concentrated
D. carried; collected
解析：第一空表示：专注于,focus on和concentrate on都可以，第二空填gather“聚集”句意是：她专注于学习以至于没注意到一群人围在她身边。选B。