根据要求改写句子。

1. I called the TV station while the alien was eating pizza. (改为否定句)

    I _________ _________ the TV station while the alien was eating pizza.

2. I was talking to the reporter when the alien came out of the restaurant. (改为一般疑问句)

   _________ _________ talking to the reporter when the alien came out of the restaurant?

3. The dog got out of the box while Mary was drinking coffee. (对画线部分提问)

   _________ _________ while Mary was drinking coffee?

4. While I was watching a soap opera, the telephone rang. (对画线部分提问)

   _________ _________ the telephone ring?

5. My mother was cooking when I got home yesterday. (对画线部分提问)

   _________ was your mother _________ when you got home yesterday?

某建筑公司承建的某面粉厂工地，厂房内有一预留洞口，原有盖板，整修地面时被拆掉，未及时恢复。冷某在拉车时，倒退着走与推车者边走边谈话，从预留洞口坠落，经抢救无效死亡。请判断下列事故原因分析的对错。

管理人员未进行现场安全检查，造成现场安全隐患。