Your mind should be______on work and study.

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问题 Your mind should be______on work and study.

选项 A、guided
B、aimed
C、directed
D、focused

答案D

解析 本题考查固定搭配。题干中已出现的介词是on。guide指“支配,领导”,一般与by连用,be guided by。aim表示“对…瞄准”,一般搭配为aim at sth./doing sth.;aim to do。direct指“指引,命令”,一般与to连用。focus指“集中,聚焦”,与on连用,表示“专注于…”,符合本句的要求,故选D。
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