3.Put the article "the" if necessary:
1. We've booked a holiday for three weeks in ....Canary Islands.
2......Sochi is located on....Black Sea.
3.Once I went for my holidays to ....Lake Baikal. It was great!
4..... London is the capital of... United Kingdom.
5. They plan to visit several countries during their vacation in Europe: France, Netherlands,... Spain.