根据要求改写句子。
1．I'm her friend.（改成一般疑问句）
2．They are in the living room.（对划线部分提问）
3．Three books and a pencil-case are in my schoolbag.（对划线部分提问）
4．She is in the bathroom.（改成否定句）
5．欢迎来我们学校。（译成英语）
our school.
1. Are you her friend?
2. Where are they?
3. What are in your schoolbag?
4. She isn't in the bathroom.
5. Welcome to