WHERE IS THE VACHA RESERVOIR?
1. En route to North Macedonia, you pass through which town?
A. Kalofer
B. Kardzhali
C. Kyustendil
2. Where is the Vacha reservoir?
A. In the Rhodope
B. In the Pirin
C. In the Rila
3. Which is Bulgaria's largest Danube city?
A. Ruse
B. Vidin
C. Silistra
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