I along the street looking for a place to park when the accident .A. went; was occurring B

问题补充：

I along the street looking for a place to park when the accident .

A. went; was occurring

B. went; occurred

C. was going; occurred

D. was going; had occurred

答案：

A. went; was occurring

B. went; occurred

(答案→)C. was going; occurred

D. was going; had occurred

解析：考查固定句型。Be doing sth when…正要做某事，在这时…(发生了意料之外的事情)。结合句意可知C正确。句意：我在沿路开车寻找一个停车的地方在这时一起事故发生了。