Properly _______ with numbers, the books can be easily found.
#97433
A
marked 
B
mark  
C
to mark  
D
marking
推荐题目
 In the USA, he made a lot of friends ______ English well to make himself ______.
#97969
A
learn; understand  
B
to learn; understood
C
learning; understand
D
learned; understood
They are broading the bridge to _____the flow of traffic.
#89920
A
put off
B
speed up
C
turn on
D
work out