The seller in this agreement has no recourse against the buyer. Test your Contracts knowledge with hundreds of practice multiple-choice questions.Built to emulate law school and MEE exams. An agreement is illegal when either its formation or performance is a crime or a tort, or it is contrary to public policy. This quiz and worksheet gauge your understanding of the different types of contract law. You will be assessed on different types of contracts. Answer these questions. 1 Why cannot a buyer demand to buy goods on display in a shop if the seller refuses to sell them? This quiz book is designed to help you reinforce your understanding of contract law with quiz questions like flash-cards and explanatory answers. The Frequently Asked Questions (FAQs) provided below highlight topics and specific questions that are often asked of the Illinois Department of Labor (IDOL).