2017 witnessed the 45th anniversary of the     1    (establish) of Sino-German diplomatic relations. Many     2    (activity) with Chinese culture as the theme were held in Berlin, the capital of Germany. When     3    (walk) in Berlin, people can really feel that this city deserves its title as the largest city in Germany. The history of Berlin could     4    (trace) back to over 800 years ago. In 18th century, Berlin became the capital of the Kingdom of Prussia. In 1871, after Otto Von Bismarck, Minister President of Prussia, unified the German States. In modern times, Berlin became the city with the greatest vitality in Germany because     5     its emerging buildings and dynamic culture.

In the very center is the famous BrandenBurg Gate, the construction of     6     started in 1789 and was completed in 1791. This BrandenBurg Gate has became a symbol of Germany. If people take     7     look at the modern Germany history, they can find that this gate was     8    (repeat) involved at critical moments.

After World WarII, the Berlin Wall stood in front of the Brandenburg Gate, and remained a symbol of separation for as     9    (long) as 28 years. After the German reunification, this area around the gate was finally restored according to     10    (it) original design.