can I make design using radioButton list

I am beginner in asp.net
I want to make design in row using radio buttonlist can it possible or I should use single single radio button
design like this (at a time select only one radio button)
radio button 1      dropdwonList     textbox
radio button 2      dropdwonList     textbox
radio button 3      dropdwonList     textbox
If I use radiobuttonlist and add property RepeatDirection="vertical" I cant add dropdwon list