Bystep guide to understanding the bidding process, along with tips on submitting a successful bid. In order to fulfill this requirement, you must complete the Vendor Responsibility Questionnaire.Our experienced construction law attorney can provide you with guidance on how to do business with a public agency and public contract bids: 888-512-5875. Bidders must complete and submit a signed original of each and the applicable number of copies of each with their Bid. 15.