Let's Go is a series of American-English based EFL (English as a foreign language) textbooks developed by Oxford University Press and first released in 1990. While having its origins in ESL teaching in the US, and then as an early EFL resource in Japan,[1] the series is currently in general use for English-language learners in over 160 countries around the world.[2] The series is now in its 5th edition, which was released in 2019, although the 3rd series is still in print.
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