将下列句子变为定语从句1:The woman remembered the day.She saw Nazis bury

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.

1.The woman remembered the day on which(on which可换when) she saw Nazis burying something near her home.
2.St Petersburg is a very beautiful city which was once called Leningrad.
3.I remember the soldier who told me not to tell anyone what I had seen.