I reported the accident to the police at once.为什么这里用一般过去时?at

I reported the accident to the police at once.为什么这里用一般过去时?at Do you know____had reported the accident to the police? I told you to r_____ the accident at once in order to make m I called the police at once（改为同义句） We"d better to call the police at once. She called the police at once. who reported to the police the accident _______ in the nearb You must go to the school office and call the police at once I'm Daisy.at the police station. i got used to the l_____ there at once. I'll take you to the end at once she d___ the accident to the police.