But often the drivers just go by, taking the human traffic        for granted. 
#12837
A
sign
B
symbol
C
signal
D
mark
推荐题目
series
#13412
A
dusk
B
outdoors
C
spelling
D
request
 The guards caught the spy and _____ him very carefully.
#12116
A
searched for
B
searched
C
look for
D
asked for
Our class _______ of thirty-two boys and twenty-three girls.
#12413
A
composes
B
concludes
C
consists
D
contains