Completar Frases

The starts in the Alps and flows into the North Sea .
The flows into the Black Sea .
The is the longest river in Europe and it is in Russia .
In the river , you can see salmon and trouts .
The flows into the Caspian Sea .
In the , you can see pelicans and seals .
Tne flows through six countries in Europe ( Germany , France . . . )
The flows through ten countries in Europe .