问题描述：
把下列句子变成一般疑问句：
He is MrBrack._________________?Yes,_____________________.
l am inGrade l._________________?no,______________________.
You areworkers._________________?no,______________________.
this is my book.________________?yes,____________________.
He is MrBrack._________________?Yes,_____________________.
l am inGrade l._________________?no,______________________.
You areworkers._________________?no,______________________.
this is my book.________________?yes,____________________.
问题解答：
我来补答展开全文阅读