将下列句子变为定语从句
问题描述：
将下列句子变为定语从句
1:The woman remembered the day.She saw Nazis burying something near her home.
2:St Petersburg is a very beautiful city.It was once called Leningrad.
3:I remember the soldier.He told me not to tell anyone what I had seen.
答
The woman remembered the day when She saw Nazis burying something near her home.
St Petersburg is a very beautiful city which was once called Leningrad.
I remember the soldier who told me not to tell anyone what I had seen.