If you _____________ your study, I am sure you will make Wap版

试题详情及答案解析

If you _____________ your study, I am sure you will make greater progress.

A．concentrate on	B．concentrate to
C．focus to	D．focus at

答案：A

试题分析：考查动词短语。Concentrate on 集中精力于，focus on 集中精力于，句意：如果你集中精力于你的学习，我肯定你会取得巨大的进步，根据句意选A项。
考点 : 考查动词短语