The Brilliantons paid their rent on time and did not owe him a penny.布里连顿一家按时交租金，分文也不欠他的。We didn't worry because they were always so prompt with their rental payment.我们不担心，因为他们交租金总是非常及时。They get free rent in return for taking care of the house.他们无须交租金，但条件是要照看好房子。