【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】The traffic accident _________ three days ago.

【2020最新整理国开(电大)人文英语1-3896网上形考机考题库】The traffic accident _________ three days ago.
选择一项：
A. was happened
B. took place
C. was occurred