She was sleeping when the phone rang 的问句是什么?

She was sleeping when the phone rang 的问句是什么?
She was sleeping when the phone rang 的问句是什么?

She was sleeping when the phone rang 的问句是什么?
Was she sleeping when the phone rang?{一般疑问句}
what was she doing when the phone rang?{就sleeping做出疑问的特殊疑问句}