问题补充:
单选题She________onherworksomuchthatshedidn’tnoticethatacrowdofpeoplehad_______aroundher.A.focused; focusedB.fixed; gatheredC.concentrated; concentratedD.carried; collected
答案:
B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。