(1) Black holes are almost completely empty space that is forever cut off from our own Universe.

(2) This declaration was not an empty threat but a sincere promise.

(3) The last thing children with incarcerated parents need is more rhetoric and empty promises.

(4) When you urinate, try leaning forward a bit in order to completely empty your bladder.

(5) An empty house

(6) Some think the reading rooms will empty out in favor of the virtual library.

(7) Solano clipped the ball past the isolated goalkeeper to score into an empty net.

(8) The accent, though, is more often on ethical values rather than on empty practices.

(9) He fills long days and empty nights by creating a fiddle, and frees his thoughts as he liberates the fiddle from the wood.

(10) His talk was empty of meaning

(11) But forgiving poor countries' debts without agreeing on a better framework for future aid flows is an empty gesture.

(12) The final bell rings and the rooms empty out before the teachers can even look up from their books.

(13) The roads are empty of traffic

(14) The train was empty of passengers

(15) If patients develop a fever or nausea they are admitted to hospital, where some beds are held empty for this purpose.

(16) Clinics, built by foreign donors, have stood empty for years, lacking staff and equipment.

(17) So, do something for me now: empty your purse or wallet onto your desk and then extract all of the important documents and cards from the pile.

(18) Will raised his nearly empty beer bottle in a salute.

(19) There's an empty space on the page

(20) So, with changes in k, the core for this example progresses from an interval, to a point, to the empty set.