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?