We must keep on learning if we want to keep up with the     of the changing times.
#6396
A
schedule
B
journey
C
pace
D
transport
推荐题目
This dictionary is _____ to my reading, but that one is __________.
#6647
A
great help; helpless
B
a great help; of no use
C
important; of few importance
D
very helpful; of no any use
 My school isn't far from here. It's only ________ walk. 
#7132
A
fifteen minutes
B
fifteen minutes'
C
fifteen minute's
D
fifteen minute