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
Let’s go to give the stranger a hand.________he’s got into some trouble.
#11012
A
Occasionally
B
Obviously
C
Suddenly
D
Surprisingly
It was so dark in the cinema that I could hardly ______ my friend.
#12454
A
turn out
B
bring out
C
call out
D
pick out
 It seems that the young man and the lady have little __________.
#12118
A
in common
B
on common
C
at common
D
with common
---Excuse me, is this seat______? ---yes. Go ahead.
#11849
A
occupied
B
flexible
C
temporary
D
vacant