If you your attention on the job in hand you’ll soon finish it. A. adaptB. concentrateC.

问题补充：

If you your attention on the job in hand, you’ll soon finish it.

A. adapt

B. concentrate

C. apply

D. request

答案：

A. adapt

(答案→)B. concentrate

C. apply

D. request

解析：可联系答.案.网客服索取。