Iam a new user of Proprofs.com, Till this time I was using free survey tool through Survey Monkey. Recently I have purchased Professional Plan from proprofs.com.
I feel that you can provide
1) "Multiple Text Boxes option" within the same question,
2) "Multiple drop down option" within the same question. This would help people like me a lot. .
I have given the sample survey of mine created through survey monkey for your reference. http://www.surveymonkey.com/s/LC5WD52