"must"引导的疑问句例句如下：

Must I finish my homework before eight o'clock？

我必须在八点之前完成我的作业吗？

Yes, you must.

Must I attend the meeting？

我必须参加会议吗？

No, you needn't.

Must he go to school today？

他今天必须去上学吗？

Yes, he must.

No, he needn't.

Must she read the book last week？

她上周必须读这本书吗？

Yes, she must have.

No, she didn't have to.

Do I need to buy a ticket？

我需要买票吗？

Yes, you must.

No, you needn't.

Can I park my car here？

我可以把车停在这里吗？

No, you mustn't.

这些例句展示了"must"引导的疑问句在不同情境下的用法，包括肯定回答和否定回答。希望这些例句对你有所帮助。