题目内容：

完成句子

根据括号内的要求完成下列各题，每空一词(含缩略形式)。

1.Alice was walking home at the time of the rainstorm.  (改为否定句)

Alice ________ ________ home at the time of the rainstorm.

2.David is playing basketball now.  (用at that time替换now改写句子)

David ________ ________ basketball at that time.

3.They were watching TV at eight last night.  (对划线部分提问)

________ were they ________ at eight last night?

4.I called Tom twice yesterday afternoon but no one answered.  (改为同义句)

I called Tom twice yesterday afternoon but no one ________ ________.

5.I was reading in the library when it started to snow.  (改为同义句)

________ I ________ ________ in the library, it ________ to snow.