They are English books.（改为一般疑问句） Are these cThey are English books.（改为一般疑问句）Are these cars?（作肯定回答）He is in Class1,Grade7,画线部分是Class1,Grade.（对画线部分进行提问）These are cars in English.（画线部分是cars）对画线部分题问That is a pen.（改为复数句）
问题描述：
They are English books.（改为一般疑问句） Are these c
They are English books.（改为一般疑问句）
Are these cars?（作肯定回答）
He is in Class1,Grade7,画线部分是Class1,Grade.（对画线部分进行提问）
These are cars in English.（画线部分是cars）对画线部分题问
That is a pen.（改为复数句）
答