How to create a questionnaire using PdfTextElement ?

C#:
//Create a PDF document
PdfDocument doc = new PdfDocument();
//Add a page
PdfPage newPage = doc.Pages.Add();
//Draw the question
PdfLayoutResult layoutResult = AddQuestion(" Question 1 ", newPage, 0);
//Draw the answer
layoutResult = AddText("Answer 1", layoutResult.Page, layoutResult.Bounds.Bottom);
//Draw the question
layoutResult = AddQuestion("Question 2", layoutResult.Page, layoutResult.Bounds.Bottom);
//Draw the answer
layoutResult = AddText("Answer 2", layoutResult.Page, layoutResult.Bounds.Bottom);
//Draw the question
layoutResult = AddQuestion("Question 3", layoutResult.Page, layoutResult.Bounds.Bottom);
//Read the texts from text file.
StreamReader reader = new StreamReader(@"..\..\Data\Answer3.txt", System.Text.Encoding.ASCII);
//Draw the answer
layoutResult = AddText(reader.ReadToEnd(), layoutResult.Page, layoutResult.Bounds.Bottom);
//Save the document.
doc.Save(@"Output.pdf");
//Close the document.
doc.Close(true);
 
private PdfLayoutResult AddQuestion(string text, PdfPage page, float bottom)
{
PdfStandardFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 12f);
PdfBrush brush = PdfBrushes.Blue;
float prevBottom = bottom + font.Height;
//Rendering text
PdfTextElement textElement = new PdfTextElement( text, font, brush);
// Formatting layout
PdfMetafileLayoutFormat format = new PdfMetafileLayoutFormat();
format.Layout = PdfLayoutType.Paginate;
format.Break = PdfLayoutBreakType.FitPage;
//Drawing string
PdfLayoutResult result = textElement.Draw(page, new RectangleF(0, prevBottom, page.GetClientSize().Width, 0), format);
return result;
}
 
private PdfLayoutResult AddText(string text, PdfPage page, float bottom)
{
PdfStandardFont font = new PdfStandardFont(PdfFontFamily.Helvetica, 12f);
PdfBrush brush = PdfBrushes.Black;
float prevBottom = bottom + font.Height;
//Rendering text
PdfTextElement textElement = new PdfTextElement( text, font, brush);
// Formatting layout
PdfMetafileLayoutFormat format = new PdfMetafileLayoutFormat();
format.Layout = PdfLayoutType.Paginate;
format.Break = PdfLayoutBreakType.FitPage;
//Drawing string
PdfLayoutResult result = textElement.Draw(page, new RectangleF(0, prevBottom, page.GetClientSize().Width, 0), format);
return result;
}