As we know, English is w____ used around the world. But can all English speakers understand each other all the time? Of c____ not. ____（甚至）the same word can have many different meanings. Sometimes the meaning can change, depending on the country where it is ____（说）. For example, there are differences between British English and American English. Also, Australian English is a little different from British English. If you want to succeed in making y____ understood, you need to know some of these differences.

-----______ there any living things on other planets ?    

                        -----I have no ideas. Maybe we can know more about that in the future.