they are waiting for you at the library怎么改疑问句you为划线部分

问题描述:

they are waiting for you at the library怎么改疑问句
you为划线部分

who are they waiting for at the libary?

For whom are they waiting at the library?

Are they waiting for you at the library?他们在图书馆里等你吗?

Whom are they waiting for at the library?