1. 句型转换。（把下列句子合并为含有which或who引导的定语从句的复合句）

1. （1） Here is the pen. I bought the pen yesterday.

3. （2） The girl is my best friend Jane. The girl is in a red skirt.

5. （3） The book is about a girl called Alice. I read the book yesterday evening.

7. （4） Is that the boy? You talked about the boy yesterday.

9. （5） I dislike people. People talk much but do little.