Larry owns an apartment building that consists of 25 units. Tommy orally agrees to rent from Larry an apartment for $750 per month. Nothing is said about the length of time, but Tommy pays rent on the first of every month. Tommy finds another apart- ment for a lot less and signs a lease with another landlord. Tommy leaves on the sec- ond of the month and later gets a bill from Larry for the entire month's rent. Point for Discussion: What obligation does Tommy have based on the kind of tenancy he rented from Larry?