She's aiming a scholarship. That is why she has been focusing her mind her work.A. at; o

问题补充：

Shes aiming a scholarship. That is why she has been focusing her mind her work.

A. at; on

B. to; on

C. for; in

D. at; into

答案：

(答案→)A. at; on

B. to; on

C. for; in

D. at; into

解析：考查介词：第一空填at，be aimed at“旨在”，第二空填on，focus one’s mind on 专注于，句意：她的目的是奖学金，这就是她为什么努力学习的原因。选A。