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

It is said that dogs will keep you _________for as long as you want when you are feeling lonely. 

_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it．

The local police said they had received reports of seven cases of murder, which caused__ among the locals.

Our English teacher，Billy，never criticizes us，but uses        to make us work hard.