Theemployeeswereaskedtoconcentratetheirattention
來源:國語幫 2.5W
問題詳情:
The employees were asked to concentrate their attention________improving the quality of the products.
A.in B.to
C.with D.on
【回答】
D 考查固定短語。concentrate one’s attention on doing sth.意為“集中精力做某事”。
知識點:介詞
題型:選擇題