句型转换。

1. There're few students in the classroom. (改为反意疑问句)

   There are few students in the classroom, _________?

2. She was having lunch at this time yesterday. (对画线部分提问)

   _________ _________ she _________ at this time yesterday?

3. He read a storybook last night. (改为过去进行时)

    He _________ _________ a storybook last night.

4. My son didn't come back home. I called him. (合并为一个由until引导的含时间状语从句的复合句)

   _____________________________________________________________

5. His bag is full of sweets. (改为同义句)

    His bag is _________ _________ sweets.