Excuse me, I'd like to borrow these books.
I'm sorry, but we can only lend you 10 books at a time.
10? I thought it was unlimited.
The rules have changed. Some students were taking out all the books for one topic and not returning them. That would give them a disadvantage over the other students in their class.
Really? I can't imagine who would do such a thing. I guess I should put some of these books back. Sorry about the extra work.
It shouldn't be a problem. They look like they're all from the same shelf.