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Sure, I can help you with that. Here are the correct words to fill in the gaps: 1. A) which 2. C) differently 3. B) altogether 4. D) over 5. C) because So the completed passage should read: Almost every language in the world has dialects and American English is no exception. At the present time there is an interesting study (1) which is on Americans speech habits. This study has shown that different words are (2) differently used in different parts of the country to denote the same thing. For example, in the east, Americans use the word "soda" to denote a soft drink. In some parts of the west, a soft drink is "tonic". Such differences are usually a source of conversation and sometimes misunderstanding (3) altogether. Speech and life all (4) over the world have often changed. New words are being used when new discoveries are made and new concepts are formed. Usage determines what is correct and what is incorrect. Fifty years ago, it was incorrect to say "It's me". But today it is acceptable simply (5) because most Americans say that instead of "It's I". People changed, so language changes. What is wrong today may be right tomorrow. I hope this helps! Let me know if you have any other questions or need further assistance with anything else related to English language learning!