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He can speak English quite fast, but he still needs to improve his _____.

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English is such an/a _______ language that learning it well brings students great advantages.

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There are many _______ of English all over the world such as British English, American English and Indian English.

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It is most easy to _____ foreign language without communicating with the native speakers regularly.

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Learning how to look new words __________ in the dictionary is really important.

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We tried to _________ his novel into different languages.

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_____ is a book or set of books giving information about all areas of knowledge or about different areas of one particular subject, usually arranged in alphabetical order.