问题
选择题
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
答案
B
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。