求把下面英语改为一般疑问句,否定句,回答肯定句,回答否定句,特殊疑问句

Is this red? Yes,it is.No,It isn't.
This isn't red.
This is red,isn't it?
Is Alice OK?Yes,she is.No,she isn't.
Alice isn't OK.
Alice is OK,isn't she?
Is that cup blue?Yes,it is.No,it isn't.
That cup isn't blue.
That cup is blue,isn't it?