题目内容：

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式（不多于3个单词）。

Plovdiv is situated in south-central Bulgaria on the two banks of the Maritsa River. The city has historically developed on seven hills, some of 1. are 250m (820.21 ft) high. Because of these hills, Plovdiv is 2.(typical) referred to in Bulgaria as “The city of the Seven Hills”. Plovdiv’s history 3.(date) back to 6000 BC. Though originally it was 4.Thracian city, Plovidiv has been ruled by many empires over centuries. Later it  5.(conquer) by the Romans. Only in 1885 did the city become part of Bulgaria. Nowadays it’s the second 6.(large) city in Bulgaria and it’s a significant economic, educational and cultural center.

Plovdiv remains a popular 7.(choose) for vacation travel. I have been obsessed with the city 8.years. Last summer I was lucky 9.(spend) a couple of days in this city and I just fell in love with its narrow paved streets and neat beautiful house! The Old Town is definitely worthy 10.(see). It is overwhelmed with restaurants, workshops and museums that were previously famous houses.