1)on what river is the us capital situated 2)why do people call their capital washington ,d.c.? 3)are there any skyscrapers in washington ,d.c.? 4)in what building do amerikan congressman work? what do they do there? 5)what colour is the usapresidents residens? 6) can tourist visit all the rooms in the white house ? what plases cant they visit 9)are there any famous museums in washington,d.c.?
