阅读下面短文，在空白处填入1个恰当的单词或括号内单词的正确形式。

For more than a thousand years, Cairo has been the capital city of Egypt. But that will be changed in the near future.

In December, the Egyptian 【小题1】(administrate) in Cairo began to move its offices to the new capital as part of a six-month trial. Not 【小题2】(official) named yet, the city 【小题3】(know) as the New Administrative Capital.

Generally 【小题4】(speak), the capital of a country serves as its political, 【小题5】(economy) and cultural center. However, in Egypt’s case, overcrowding 【小题6】(lead) its capital to become congested (拥堵的) and has worsened other problems such as air pollution.

Cairo, 【小题7】(locate) at the top of the heavily populated Nile Delta, attracts people across the country. At present, the city has more than 20 million people. But its population will double 【小题8】 40 million by 2050.

The Egyptian government has great desires for the new capital, 【小题9】 size is much bigger. Beginning its construction in 2015, the new capital covers 714 square kilometers, nearly twice 【小题10】 size of Cairo.