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.

     I have always heard that walking under a ladder brings bad luck, but I' never thought so. I have walked
under ladders many times, but I have never met anything bad before.It's the damn with black cats. People
say if a black cat crosses before you, it means bad luck. I have never thought that until this afternoon. But
ever since I heard my student Sam's story, I've begun thinking about whether it was true.
      This afternoon, Sam was walking down the street thinking about something, so he wasn't paying attention
to where he was going. He walked right under a ladder standing against a building. A black cat ran out of a
door just at that moment, and Sam fell over it, his head hit the ladder. A man washing the window was at the
top of that ladder and the dirty water went down through the air. Poor Sam! He got wet all over.
(     )1. At first, the writer believed that walking under a ladder would bring bad luck.
(     )2. A black cat crossing will bring you good luck when you are walking.
(     )3. This afternoon, the writer's son Sam was walking down the street thinking about something.
(     )4. When Sam was walking under a ladder, a black cat ran out of a door.
(     )5. There was a man washing the window near the door.

     I have always heard that walking under a ladder brings bad luck, but I've never thought so. I have
walked under ladders many times, but I have never met anything bad before. It's the same with black
cats. People say if a black cat crosses before you, it means bad luck. I have never thought that until this
afternoon. But ever since I heard my student Sam's story, I've begun thinking about whether it was true.
     This afternoon, Sam was walking down the street thinking about something, so he wasn't paying
attention to (注意到) where he was going. He walked right under a ladder standing against (倚着) a
building. A black cat ran out of a door just at that moment, and Sam fell over it. His head hit the ladder.
A man washing the window was at the top of that ladder and the dirty water went down through the air.
Poor Sam! He got wet all over.

(     )1. At first, the writer believed that walking under a ladder would bring bad luck.
(     )2. A black cat crossing will bring you good luck when you are walking.
(     )3. That afternoon, the writer's son Sam was walking down the street thinking about something.
(     )4. There was a man washing the window near the door.
(     )5. Sam had bad luck that afternoon.