In China，it is a traditional________to show respect to ancestors during the Qingming Festival.

(2013·陕西宝鸡模拟)After Queen Elizabeth officially opened the 2012 Summer Olympics, London became the first city ________ three Olympic Games in history.

After the earthquake, many people had to be _____ in the tents because most of their houses were badly damaged. 

 The head office of the bank is in Beijing, but it has _______ all over the country.

－What is the rich peasant’s plan?－He has made up his mind to　　　　a home for the elderly in his village.