4000 Essential English Words 4 With Answers

4000 Essential English Words is a six-book series that is designed to focus on practical high-frequency words to enhance the vocabulary of learners from high beginning to advanced levels. The 600 words in each book of this series along with the additional target words presented in the appendices included in the first three books of the series are the most useful words in English. They cover at least 90% of the words in conversation novels newspapers and academic texts.

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