What is the name given to the official residence of the president of the usa in washington?

The  white house  is the  official residence  and principal workplace of the  president of the united states, located at 1600  pennsylvania avenuenw  in  washington, d.c.  it has been the residence of every u.s. president sincejohn adams  in 1800. the house was designed by irish-bornjames hoban[2]  and built between 1792 and 1800 of white-painted  aquia creek sandstone  in the  neoclassical style. when  thomas jefferson  moved into the house in 1801, he (with architectbenjamin henry latrobe) added lowcolonnades  on each wing that concealed stables and storage.[3]  in 1814, during the  war of 1812, the mansion was set ablaze by the  british army  in the  burning of washington, destroying the interior and charring much of the exterior. reconstruction began almost immediately, and president  james monroe  moved into the partially reconstructed  executive residence  in october 1817. construction continued with the addition of the semi-circular south portico in 1824 and the north portico in 1829.

1) если я свободен завтра вечером, когда я посещаю моих родителей (напиши нормальное   предложение) 2) if i hadn't been so busy last week, i would have joined your excursion. 3) if you had known grammar better, you wouldn't have done so many mistakes in your exercises. 4) if it hadn't been so cold yesterday, we would have come to the skating-rink. 5) you won't be a good sportsman, if you don't train hard.