Read the following context and answer the question.
Context: Crowds of angry , smelly people were bitching and bumping into each other , and into me , trying to get their copy of whatever textbook they needed for whatever stupid class they were taking . One lady asked to herself out loud " Where is 237 ? " when she was looking at the History section of books .
Question: Why may the people have been unhappy ?
Answer:


It was crowded , hot , and difficult to get their books .