将下列句子改为含有定语从句的复合句
将下列句子改为含有定语从句的复合句
1、The dictionary is my English teacher’s.I borrowed it two days ago .
2、He is the most careful boy.I know him.
3、The woman is our headmaster.She is talking with some visitors.
4、Do you know the girl?Her mother is a doctor.
5、He told me the reason.He didn't attend the meeting.