1、They go to school by bike.（对划线部分提问）

1、They go to school by bike.（对划线部分提问）
划线部分是‘by bike’
__________ __________they __________to school?
2、He was so busy that he couldn't go to the concert（改为同义句）
He was ___________ busy ___________________ go to the concert.
3、Rose knows something about the matter.（改为否定句）
Rose __________________ __________________ about the matter.
4、He is an American child.（改为复数形式）
They are ________________ ________________.
混分的绕道！