1. 句型转换。

1. （1） The film began ten minutes ago. (同义句替换)

   The film for ten minutes.

3. （2） He bought his camera last year. (同义句替换)

   He his camera last year.

5. （3） She has worked in the factory since she was sixteen years old. (就划线部分提问)

   has she worked in the factory?

7. （4） They joined the club ten years ago. (同义句替换)

   They the club for ten years.