问题
单项选择题
The policemen hurried to the spot of traffic accident where there was a large crowd of（）
A．looker-on
B．lookers-ons
C．looker-ons
D．lookers-on
答案
参考答案：D
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The policemen hurried to the spot of traffic accident where there was a large crowd of（）
A．looker-on
B．lookers-ons
C．looker-ons
D．lookers-on
参考答案：D