Ex. 5. write their names. the mississippi, the potomac river, washington,d.c., the great lakes, uluru, badwater, 1. the five big lakes on the border of the usa and canada 2. the biggest river in the usa 3. the capital of the usa 4. the river washington,d.c. stands on 5. the lake situated in death valley !

1.The Great Lakes
2.The Mississippi
3.Washington D.C.
4.Uluru
5.Вообще Badwater-это марафон, а не озеро, насколько я знаю

1) The five big lakes on the border of the USA and Canada: The Great Lakes;
2)The biggest river in the USA: The Mississippi;
3) The capital of the USA: Washington,D.C;
4)The River Washington,D.C. stands on: The Potomac River;
5)The lake situated in Death Valley: Badwater.
Как-то так :)