你好,很高興能夠在這里回答你的問題,這道題的正確答案應該為：
We have to leave the cellphones at home on shcool days.
Do you have to leave the cellphones at home on shcool days?
Yes ,we do.
上面已經改為一般疑問句了,這里應該是改為特殊疑問句了吧
When do you have to leave the cellphones at home ?
老師說電話要用mobile什么什么的。能不能告訴有關mobile的電話英語單詞？手機mobile phonecell phone 都可以的既然你老師有要求，換為 mobile phone就可以了手機mobile phonecell phone 都可以的既然你老師有要求，換為 mobile phone就可以了謝謝了。能不能改個否定句We don't have to leave the cellphones at home on shcool daysok謝謝你就采納你吧祝你進步