With the loud noise going on in the workshop, I can hardly       on my lessons.
#74658
A
put
B
rely
C
concentrate
D
center
推荐题目
The country has ________ too many wars.
#71595
A
gone down
B
gone through
C
gone along
D
gone up
_____ my school days in the Affiliated High School of Shanxi University, I had a sense of pride.
#66317
A
Looking up to
B
Looking down upon
C
Looking away from
D
Looking back on