题目内容：

关系代词或关系副词改复合句
①The old man is a professor.He teaches chemistry in a college.
②The woman is here now.You were talking about her.
③This is the hall.We listened to the report in it the other day.

优质解答

1 The old man is a professor who teaches chemistry in a college.2 The woman who you were talking about is here now.3 This is the hall in which(where) we listened to the report the other day.