英语练习题：改否定句
问题描述：
英语练习题：改否定句
改否定句：
1.You must finish your exercise befor\\\All of the bus drivers are men
还有一句对划线部分提问：
1.It is made of wood.
划线部分为wood
______ ______ the plane leave?
答
You needn't finish your exercise befor
All of the bus drivers aren't men还有一句对划线部分提问：1.It is made of wood.划线部分为wood____________ the plane leave?What is the planemade of?不敢保证对啊！