_____ is known to all that the Amber Room belongs to the Russians.

--What can I do for you?--I am looking for a birthday gift for my sister, _______at a proper price but fashionable.

 Do you really believe that Mr White has blamed us for the accident,especially ________ ?

——There must be a dozen pens in this house but I can never find one when I need one.——Keep looking.          is sure to turn up. 

 There isn’t _____ beef in the fridge. Let’s buy some today.