Ten minutes after we left the station the bus broke down . My roommate had told me that would probably happen . A 45 minute delay followed before another bus showed up to transfer us . The new bus was in worse shape and made terrible grinding noises like the gears were shot every time the driver shifted .

Question: Why did their roommates warn them about the bus beforehand ?
Answer: The bus was notorious for breaking down .The bus is notorious for being delayed .The bus was known to be late .They wanted them to catch their bus on time .