The red boy is you?一般疑问句

The red boy is you?一般疑问句 The bike is red.改为一般疑问句 The boy is six改为一般疑问句 The pen is red改成一般疑问句怎么改 用the,door,is,red造一般疑问句 The red sweater is 18 dollars.(改为一般疑问句) The girl in red is my sister.改一般疑问句 The red apple is mine.（改为一般疑问句） the girl in red is a waitress.改一般疑问句 The girl in red is my sister.改为一般疑问句 The boy in red can jump into the swimming pool改为一般疑问句 Is the boy------red you 中间的空怎么填