【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】The __________ were shocked to see the workers pulling the car along the street.

【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】The __________ were shocked to see the workers pulling the car along the street.
选择一项：
A. passers-by
B. passer-bys
C. passers-bys