The bag is （full of books）.就括号部分提问 （Lily's and Mike's ) bag's are heavy.就括号部分提问Are your teachers old?(做肯定回答）Is his car dirty?(做否定回答）Our school buses are full.（改成否定句）
问题描述：
The bag is （full of books）.就括号部分提问 （Lily's and Mike's ) bag's are heavy.就括号部分提问
Are your teachers old?(做肯定回答）
Is his car dirty?(做否定回答）
Our school buses are full.（改成否定句）
答