Why do you look so worried? —My computer broke down and my essay ______ unfinished since

It will______us several years to learn a foreign language well.

(2013·陕西宝鸡二模)The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.

They often _______their friends at weekends and they always have a good time.

How is he now? Is he slowly ____?