He must have been at home all day last night的反义疑问句怎样问?

来源：学生作业学帮网编辑：学帮网时间：2024/05/31 18:49:56

He must haven't been at home all day last night.

呃……我觉得是mustn't he 。。。。
must不是情态动词吗？有情态动词应该是用情态动词吧，didn't 和wasn't都不对啊。。。。。。。。。

Shouldn't he have been at home all day last night?