I have a ruler?改为一般疑问句

I have a ruler?改为一般疑问句 This is a ruler 改为一般疑问句 This is a ruler改为一般疑问句 That is a ruler.改为一般疑问句 I have a baseball 改为一般疑问句 I have a cold .改为 一般疑问句 I need a ruler for my math class.(改为一般疑问句）what ( )( )( )( )y It is a ruler(改为一般疑问句)怎么写? I have a volleyball（改为一般疑问句） 1:I have a volleyball.(改为一般疑问句) I have a car改为一般疑问句,否定句 i have a pair of cheap shoes改为一般疑问句