Whatever work you are doing, you should concentrate your attention it.A. toB. towardsC. wi

发布时间：2020-08-16 14:51:30

Whatever work you are doing, you should concentrate your attention     it.
A. to
B. towards
C. with
D. on

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A. to
B. towards
C. with
(答案→)D. on
解析：考察介词。  A.到    B. 朝向 C. 带有 D. 在……上面。concentrate one’s attention on sth注意某事。故选D。
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