Olivia is from … North America.  His home country is … Canada.
2.      The country I want to visit in spring is … Czech Republic.
3.      … Kazbek is one of the most famous mountains in Russia.
4.      I’d like to travel to … Malta or to … Japanese Islands next summer.
5.      … Perm stands on … Kama; it is its main river.
6.      I spent my weekends on … Black Sea in … Russian Federation.
7.      … Bering Strait is between … Arctic Ocean and … Pacific one.
8.      I’ve never travelled to … Netherlands.
9.      … Kalahari is a big desert in … South Africa.
10. … Himalayas are the highest mountain chain in … Asia.
11. I have a wonderful view of … Lake Tahoe from my hotel.
12. … France is to … north of … Italy.
13. I live in … Oxford Street in … London. 
Артикль the кде надо​