With the loud noise going on in the workshop I can hardly on my lessons.A. putB. relyC. c

问题补充：

With the loud noise going on in the workshop, I can hardly on my lessons.

A. put

B. rely

C. concentrate

D. center

答案：

A. put

B. rely

(答案→)C. concentrate

D. center

解析：词义辨析。 A。放 B．依靠 C．集中；全神贯注 D．居中；定中心。句意：伴随着讲习班中进行的大声的噪音，我很难集中注意力与我的课程上。故选C。