句型转换 1. I was making model planes when m

题目：

句型转换

1. I was making model planes when my mother came back.(对画线部分提问)

_______ _______ _______ _______ when your mother came back?

2. I think classical music is boring.(改为否定句)

I _______ _______ classical music is boring.

3. My mother was doing the dishes at that time.(同义句转换)

My mother was _______ the _______ at that time.

4. He read a story-book last night.(改为过去进行时)

He _______ _______ a story-book at eight o'clock last night.

5. He wasn't old enough to go to school. (同义句转换)

He was _______ young_______ go to school.