题目内容：

根据括号内的要求完成下列各题，每空一词（含缩略形式）。

1.Lingling was practicing the guitar at that time. (改为否定句)

Lingling ________ ________ the guitar at that time.

2.They were sweeping the floor when I left.(改为一般疑问句)

________ they ________ the floor when you left?

3.I was listening to music while my mother was cooking.(对划线部分提问)

________ were you ________ while your mother was cooking?

4.We were having a party when it rained.(改为同义句)

While we ________ ________ a party, it rained.

5.Jim swam last Monday. (用at four last Monday afternoon替换last Monday改写句子)

Jim ________ ________ at four last Monday afternoon.